IMF is one of the mechanisms native to Exchange Server 2003 that can really help you reduce the amount of unsolicited commercial email (UCE) your Organization receives. Based on the characteristics of millions of messages, Intelligent Message Filter can accurately assess the probability that an incoming e-mail message is either a legitimate message or UCE.Figure 1: Exchange server topology with Intelligent Message Filter enabledIntelligent Message Filter is installed on Exchange bridgehead servers that accept incoming Internet e-mail messages to filter incoming e-mail messages.Based on the probability that the message is UCE, IMF rates it with a property called a spam confidence level (SCL). This rating remains associated with the message when the message is sent to other Exchange servers. An administrator sets two thresholds that determine how Intelligent Message Filter handles e-mail messages that have various SCL ratings: a gateway threshold with an associated action to take on messages greater than this threshold, and a mailbox store threshold. If a message has a rating that is greater than or equal to the gateway threshold, Intelligent Message Filter takes the action specified. If the message has a rating lower than the gateway threshold, the message is sent to the Exchange mailbox store of the recipient.
At the Exchange mailbox store, if the message has a rating greater than the mailbox store threshold, the mailbox store delivers the message to the user's Junk E-mail folder instead of to the Inbox.On the client side, Microsoft Office Outlook 2003 and Microsoft Office Outlook Web Access for Exchange Server 2003 let users create a list of safe senders from whom they always want to accept e-mail messages and a list of blocked senders from whom they always want to reject e-mail messages.Figure 2: Message flow with Intelligent Message Filter and Exchange filtering. Filtering (Sender, Connection, Recipient)IMF is a great anti-spam technology, but even before it existed, Exchange Server 2003 already had some native anti-spam mechanisms, namely:. Connection filtering - Filters inbound messages by comparing their IP address against a block list provided by a third-party real-time block list service. You can also enter your own set of accepted/restricted IP addresses at a global level. Sender filtering - By default, SMTP connections that are created by senders on this list are dropped. Recipient filtering - Allows you to set global restrictions on mail to specific recipients.When used together, these 3 filtering techniques can block a significant amount of spam at the perimeter of the organization, thereby reducing costs by rejecting messages at the earliest opportunity. Microsoft has an interesting paper, describing how they manage the large quantities of unwanted e-mail and malware-infected messages in its inbound Internet e-mail traffic:.
According to them, the use of these 3 filters blocks almost 95 percent of the incoming unwanted messages.Figure 3: Spam filtering process used by Microsoft ITBy now you must be saying, “OK, you convinced me, where can I configure these fine filtering mechanisms?”. Wait no more, fellow reader, just open Exchange System Manager, navigate to the Global Setting of your Exchange Organization and right click Message Delivery. Select Properties and you’ll find the tabs with all the configuration options for Connection, Sender and Recipient Filtering.Figure 4: Message Delivery PropertiesOne common mistake people tend to do is that they forget to activate the filters after configuring them. In order to do that, you must edit the properties of the SMTP Virtual Server, click Advanced on the General tab and then click Edit again. Difficult enough? Well, you only have to do it one time.Figure 5: SMTP Virtual Server PropertiesAnti VirusLet’s face it, in today’s reality it’s impossible to live without virus protection on your mail servers.
Currently, the primary vehicle for transmission of computer viruses is electronic mail. Most viruses propagate quickly through messaging systems because e-mail clients provide both sending capabilities and programmatic access to address information.An essential aspect of protecting your messaging system against viruses is preparing an antivirus strategy. Your antivirus strategy should include educating users about viruses, installing antivirus software in the appropriate locations (at the firewall, at the Simple Mail Transfer Protocol (SMTP) gateway, at each Exchange server and client computers), and ensuring that the antivirus software is current.
When selecting software, it is important to use antivirus software that has the ability to push updates, such as new signature files, to client computers and servers without user intervention, because such software reduces user responsibility and user errorExchange Server does not provide built-in protection against viruses, but it does provide a framework for antivirus vendors to develop solutions for Exchange Server - Virus Scanning Application Programming Interface (VSAPI) 2.5.One common method virus writers use to transport viruses is to include the virus in an attachment. To protect against such viruses, Outlook and Outlook Web Access provide the following attachment blocking features:. Attachment blocking features in Outlook - Outlook 2002 and later versions include an attachment-blocking feature that blocks the most obvious file types, such as.exe,.bat, and.vbs files.
Attachment blocking features in Outlook Web Access - Exchange 2000 Service Pack 2 introduced the ability to block attachments by file type and MIME type in Outlook Web Access (OWA). In OWA 200x attachment blocking is enabled by default.Microsoft recently acquired Sybari, which was known for their suite of anti-virus and anti-spam suite of products, Sybari Antigen. The next version of this family of products will be integrated in future Microsoft releases.Restrict Distribution ListsDoes your Organization have a Distribution List (DL) that contains the entire GAL? Most of my clients have something similar. And in case you do, is its usage restricted? Most of the Organizations I worked in don’t restrict the possibility of anyone (including external addresses) sending mail to this large Distribution List. Guess what, spammers and bad-intentioned people love this list, with a single message they can reach all your workers.
The history of Microsoft Exchange Server begins with the first product - Exchange Server 4.0 in March 1996 - and extends to the current day.Microsoft had sold a number of email products before Exchange. V2.0 (written by Microsoft) was replaced in 1991 by 'Microsoft Mail for PC Networks v2.1', based on Network Courier, which Microsoft had acquired. When the original version of Exchange Server was sold to the public, it was positioned as an upgrade to 3.5.Exchange Server was an entirely new -based mail system with a single database store that also supported directory services. During its development, Microsoft migrated their own internal email from a -based system to Exchange Server from April 1993, with all 32,000 Microsoft mailboxes on Exchange by late 1996.The directory used by Exchange Server eventually became Microsoft's service, an -compliant directory service. Active Directory was integrated into as the foundation of. Contents.Exchange Server 4.0 The first release of Exchange outside of Microsoft was Exchange Server 4.0 in March 1996, with five being released over the next two years.
Exchange Server 5.0 Initial release: May 23, 1997.Introduced the new Exchange Administrator console, as well as opening up 'integrated' access to -based networks for the first time. Unlike Microsoft Mail (which required a standalone SMTP relay), Exchange Server 5.0 could, with the help of an add-in called the Internet Mail Connector, communicate directly with servers using SMTP. Version 5.0 also introduced a new interface called Exchange Web Access, which was rebranded as in a later.
Along with Exchange Server version 5.0, Microsoft released version 8.01 of, version 5.0 of the and version 7.5 of to support the new features in the new version of Exchange Server.Exchange Server 5.0 introduced a number of other new features including a new version of Outlook Web Access with calendar support, support for and v3 clients and the Deleted Item Recovery feature.Exchange Server 5.5 Initial release: Nov. 5, 1997, released to manufacturing.The last version of Exchange Server to have a separate directory, SMTP and NNTP services.
There was no new version of Exchange Client and Schedule+ for version 5.5, instead version 8.03 of Microsoft Outlook was released to support the new features of Exchange Server 5.5.It was sold in two editions: Standard and Enterprise. They differ in database store size, mail transport connectors, and clustering capabilities.Standard Edition Had the same 16 GB database size limitation as earlier versions of Exchange Server. It included the Site Connector, MS Mail Connector, Internet Mail Service (previously 'Internet Mail Connector'), and Internet News Service (previously 'Internet News Connector'), as well as software to interoperate with,. Enterprise Edition Had an increased limit of 16 TB (although Microsoft's best practices documentation recommends that the message store not exceed 100 GB). Adds an connector, and interoperability software with.
Introduced two node capability. Exchange Server 2000 Codenamed 'Platinum', this version overcame many of the limitations of its predecessors. For example, it raised the maximum sizes of databases and increased the number of servers in a cluster from two to four. However, many customers were deterred from upgrading by the requirement for a full Microsoft Active Directory infrastructure to be in place, as unlike Exchange Server 5.5, Exchange 2000 Server had no built-in Directory Service, and had a dependency upon Active Directory.
The migration process from Exchange Server 5.5 necessitated having the two systems online at the same time, with user-to-mailbox mapping and a temporary translation process between the two directories. Exchange 2000 Server also added support for, but that capability was later spun off to.Exchange Server 2003 Codenamed 'Titanium', this version can be run on (with 4) and, although some new features only work with the latter. Like Windows Server 2003, Exchange Server 2003 has many compatibility modes to allow users to slowly migrate to the new system. This is useful in large companies with distributed Exchange Server environments who cannot afford the downtime and expense that comes with a complete migration.It made the migration from pre-2000 versions of Exchange significantly easier (although still involved the same basic steps), and many users of Exchange Server 5.5 waited for the release of Exchange Server 2003 to upgrade. The upgrade process also required upgrading a company's servers to Windows 2000. Some customers opted to stay on a combination of Exchange Server 5.5 and, both of which are no longer supported by Microsoft.One of the new features in Exchange Server 2003 is enhanced disaster recovery, which allows administrators to bring the server online more quickly. This is done by allowing the server to send and receive mail while the message stores are being recovered from backup.
Some features previously available in the Microsoft 2001/2002 products have been added to the core Exchange Server product, like and server-side, while the Mobile Information Server product itself has been dropped. Also new is the ability to drop inbound e-mail before being fully processed, thus preventing delays in the message routing system.
There are also improved message and mailbox management tools, which allow administrators to execute common chores more quickly. Others, such as Instant Messaging and Exchange Conferencing Server have been extracted completely in order to form separate products. Microsoft now appears to be positioning a combination of, and as its collaboration software of choice. Exchange Server is now to be simply e-mail and calendaring.Exchange Server 2003 added several basic filtering methods to Exchange Server. They are not sophisticated enough to eliminate spam, but they can protect against DoS and mailbox flooding attacks. Exchange Server 2010 logoExchange Server 2010 was in May 2009, and reached on November 9, 2009.
New features. DAG (Database Availability Groups): SCC, CCR, LCR and site resiliency functionality SCR have been replaced by DAG. It provides database-level high availability (as opposed to server level) and supports a number of copies of each database (number based on Exchange Edition) and flexible configuration (databases copies may be added/ removed at will without requiring major server reconfiguration). Client Access Server (CAS): High availability for the Client Access Server role is provided by using Client Access Server (CAS) arrays. A CAS array can contain multiple Client Access Servers in an Active Directory site and provide a single name endpoint for client connections.
CAS arrays cannot span multiple Active Directory sites. Mailbox Server Role may be combined with the Client Access Server: In Exchange Server 2007, a clustered mailbox server could not be combined with any other roles. In Exchange Server 2010, the Mailbox Server Role may be combined with the Client Access Server and/or Hub Transport roles, regardless of whether or not the mailbox server participates in a Database Availability Group. However, since Database Availability Groups use Windows Failover Clustering, and Microsoft does not support the combination of Windows Failover Clustering and Windows Network Load Balancing on the same server, a multi-role deployment will require the use of a 3rd party load balancer to provide load balancing and fault tolerance for the Client Access Server role.
RPC Client Access: With the introduction of the RPC Client Access service, all Outlook clients access their mailbox database through the Client Access Server role. This abstraction layer allows for improved load balancing and redundancy and minimal client impact in the event of a database level.-over ('switchover' or 'failover') event. Cost savings in required hardware: Exchange Server 2010 provides cost savings in required hardware. Storage performance requirements (measured in IOPS: Input/output operations per second) have been reduced by approximately 70% over Exchange Server 2007, and by approximately 90% over Exchange Server 2003. According to a case study, Microsoft IT was able to reduce hardware costs by 75% during the migration from Exchange Server 2007 to Exchange Server 2010. Personal Archive: Exchange Server 2010 extends the large mailbox support introduced in Exchange Server 2007, and also introduces a Personal Archive feature to allow messages to be retained longer without the need for a third-party archival system. The Personal Archive is implemented as a secondary mailbox for archive-enabled users, and in Exchange Server 2010 Service Pack 1, the Personal Archive may be located on a different database than the primary mailbox, which may reside on a different disk if desired.
Backup can be performed via multiple solutions like Handy Backup or Acronis. Recoverable Items: The compliance and legal search features have been enhanced. What was formerly known as the 'Dumpster' in previous versions of Exchange (a special storage area for messages that have been deleted from the Deleted Items folder or 'permanently deleted' from a regular folder, such as the Inbox) has been evolved into the Recoverable Items folder in Exchange Server 2010. If configured appropriately, the Recoverable Items folder allows for a 'tamper proof' storage area (users cannot circumvent the Recoverable Items folder to bypass legal discovery), which also provides a revision history of any modified items.
Administration delegation: Can now be performed at a granular level due to Exchange Server 2010's implementation of Role Based Access Control (RBAC). Users and administrators can be given extremely fine-grained abilities for functions provided both within the Exchange Management Console or Exchange Management Shell and in., August 26, 1991, Computerworld. Paul Korzeniowski (1992). Software Magazine. Archived from on 16 May 2013. Retrieved 28 October 2012.
^. Archived from on May 7, 2005. Dr. Nikolai Bezroukov. Retrieved 28 October 2012. Redmond, Tony (31 March 1997)., Microsoft.com.
Vidhya (1992). Software Magazine. Retrieved 28 October 2012. Markus Klien (2003). Retrieved 28 October 2012. From the original on July 6, 2007.
Retrieved 28 October 2012. Retrieved 28 October 2012. Redmond Channel Partner.
Retrieved 8 April 2014. Retrieved 28 October 2012. (1 March 2006). The Microsoft Exchange Team Blog. Retrieved 28 October 2012. Elizabeth Montalbano (17 January 2007).
Retrieved 28 October 2012. Retrieved January 27, 2016. Rodney Buike. Retrieved 2008-12-19.
Elizabeth Montalbano (9 November 2009). Beyond Binary - CNET News. Retrieved 28 October 2012. The Exchange Team Blog. 11 October 2012.
Retrieved 28 October 2012. Retrieved 17 November 2012. Rajith Enchiparambil (2013). Retrieved 11 February 2013. Mary Jo Foley (23 July 2012).
Retrieved 28 October 2012. Paul Cunningham (2012). Retrieved 28 October 2012. Retrieved 28 October 2012. Retrieved January 27, 2016.
Kings court card game buy. As a retailer backer, you will get access to all news and updates regarding this Kickstarter.The 399 SEK pledge is a deposit, and we will contact you individually after the Kickstarter ends to finalize your order. Please choose our RETAILER pledge for a minimum of five copies of Crusader Kings - The Board Game. We practice industry standard price reductions for distributors and retailers. These funds will show up as credit for you in the Pledge Manager. We love our retailers and invite you to be a part of this Kickstarter!
Scanning Exchange databases with file system antivirus is a recipe for disaster. This really should not come as a surprise for admins running Exchange services within the enterprise, since this has been the field requirement for a long time. The documentation provided by Microsoft is very clear in what exclusions are required for file system antivirus and Exchange to coexist. For reference the relevant articles are:.If this is so well documented, then what could possibly go wrong? Plenty.Update 30-6-2014: Please also see on a related issue. Understanding File System AV ScanningEvery vendor who writes a file system AV product will implement theirs in a different way. Because of this, and the fact that I will not identify vendors by name, this article will be written in a generic style.
The concepts however will apply to the vast majority of AV products.TechNet does a good job of listing the types of file system antivirus scanners:. On-demand file-level scanning refers to a part of file-level antivirus software that you can configure to scan files on the hard disk manually or on a schedule. Some versions of antivirus software start the on-demand scan automatically after virus signatures are updated to make sure that all files are scanned with the latest signatures.Other terminology that may be encountered is the term On-Access. This is where AV will process a file when it is accessed. Unlike the On-Demand scan, if a file is never opened then it is never scanned. Reversely if it is opened multiple times then it will likely get scanned each time it is accessed.
The exact details of this are at the discretion of the AV vendor.The heuristics contained within each AV product vary greatly, and they behave differently on the above point and many others. Some do not show the configured file system exclusions in their admin tool graphical interface and you have to look at the registry to see what file system paths are actually being excluded.
Others allow the AV team to lock the management application on the Exchange server down so that it is harder/impossible to see what scans are running, to troubleshoot issues and to terminate the AV scan (if required) without waiting for AV team to respond.Please consult with your AV team and review their vendor’s documentation to understand how their product works.Issues That Can Arise Due To File System AV ScanningRegrettably there are multiple issues that can and will arise if you allow file system AV to scan Exchange. Note that this is not just the mailbox database file, there are range of other locations that must also be exempted from file system AV scanning. For details see the links at the start of this post.File-level scanners may scan a file when the file is being used or at a scheduled interval. This can cause the scanners to lock or quarantine an Exchange log file or a database file while Exchange tries to use the file. This behaviour may cause a severe failure in Microsoft Exchange and may also cause -1018 ESE errors.One thing to note is that file-level scanners do not provide protection against e-mail viruses, such as the Storm Worm.
Storm Worm was a backdoor Trojan horse virus that propagated itself through e-mail messages. The worm joined the infected computer to a botnet, where the computer was used to send spam e-mail messages in periodic bursts. Such viruses can affect the performance of the computer and the network that it is attached to.This is not a new issue. As my friend puts it over on his blog,! Because of this, the M: drive was hidden by default in Exchange 2003. Exchange 2000, which introduced the M: Drive, was often negatively impacted by file system AV scanning M. A Case In PointThis is the story of a recent engagement where I ran into some serious AV issues.
The customer in question had recently completed an Exchange Server Risk Assessment (ExRAP). ExRAP looks at both technical and process aspects of managing messaging services. One interview question specifically asks if the correct AV exclusions have been implemented. The customer stated that they were.Fast forward 4 months. The customer’s stable Exchange environment started to exhibit strange behaviours all of a sudden.
Issues included degraded database performance, database failover issues and very poor Outlook client response times. As part of initial troubleshooting Microsoft requested that the AV exclusions be checked to ensure that they are correct and were not causing any issues. Again they were stated as correct. Screen shots and remote assistance sessions showed that the settings were entered. So what was causing databases not to failover between DAG members?Well it turns out that only half of the puzzle was validated. Unbeknown to the Exchange admins, the AV team had implemented a weekly On-Demand scan that started late Sunday evening and scanned every single file on the server. Yes that's right - zero exclusions It gets better!
These scans were taking a very long time to complete, and in some cases the scan did not complete until Wednesday or Thursday!The AV product in use has a feature where it will lock a file that looks suspicious for an un-specified amount of time. The lock duration is controlled by the AV engine and is entirely at its discretion. This is what caused the database failover issues. When trying to mount a database on a server, AV locked the Exchange database as it though that MBD01.edb was suspicious. Since the file was locked, Exchange was unable to gain access to the database and mount it. If enough time elapsed then AV would release the file and the database could be mounted. Reviewing traces corroborated this, as we would see Exchange starting to read the database but not progressing further.Not only was this an unsupported act as far as Microsoft is concerned the impact to the customer was tremendous.
Some of the issues experienced were:. Storage performance was impactedLearning PointsRather than just state that the required exclusions be implemented, I thought it would be more beneficial to discuss some of the areas which typically contribute to the above situation, and some resolutions. Knowledge SharingAll teams must be tightly aligned on how AV is deployed and configured. While server teams like Exchange do not need to know the exact details of implementing AV on the backend, they must understand how to communicate with the other teams effectively, more on this in a minute!
For example how do the Exchange servers get the correct AV policy assigned? Is it based on server name, location in AD or are Exchange servers manually tagged with a policy? This sounds minor, but this knowledge is critical in understanding the impact of choosing a different server name or the steps required if reinstalling an Exchange server from scratch. TerminologyTo assist with communicating effectively, all teams should communicate using the same terminology to minimise any potential misunderstandings.
In the above example, the Exchange team understood an AV exclusion to apply to any and all AV scans. However the AV teams did not share this viewpoint, and their terminology was more granular. Communication Teams should have defined lines of communication. This is applicable not just to escalate issues, but also to ensure that proactive knowledge is shared. For example:.
If an update to the core AV product is being rolled out, then the relevant server admins must be notified. If an AV incident is observed in APAC, then the AV team should investigate the issue and if they find that AV is scanning locations it should not, then global server teams must be notified to validate their configurations.Communication between teams at the start of the above story was not optimal, though it did improve greatly. Enterprises must ensure that the required lines of communication and escalation are available between all the teams that work together to provide an enterprise solution. This applies to all products, applications and services that operation in an enterprise and is not limited to just Exchange. Ensure that everyone is totally clear on what other teams expect from them and vice versa.
For example if the Exchange admin requests that a certain file be exempted then the Exchange admin’s expectation that it is also excluded from any and all scans. The AV team will expect clear and concise guidance from the Exchange admin as to what are the file exclusion requirements. Such requirements are application specific. Technical ItemsThere must be a detailed discussion on the configuration of the AV policies that are applied to the Exchange infrastructure.
Some examples include:. Typically enterprise AV products will be managed by a central tool/directory that pushes out the defined AV configuration to the agents. Normally this is set to overwrite any local changes to the AV configuration. All changes must be made to the central console.The AV agent health must be monitored by the AV team to ensure that an agent does not “go native”, and ignore its configuration. The worst possible case here would be for an agent to revert back to its default configuration which typically means that there are no exclusions and all files and processes are scanned.AV team must accept that Exchange requires certain file system exclusions to operate in a supported manner by Microsoft. This is a tendency for such AV teams to perceive a security risk by the fact that MDB01.edb is never scanned by file system AV.
Their concern that NaughyFile.edb will be stored on the Exchange server needs to be tempered with:. All workstation in the enterprise should have different local administrator passwordsThe above are only a few points in a typical discussion on this topic. Please engage with a security consultant to fully discuss such issues, as each enterprise will have different business requirements which translate into the underlying technical configuration. Some customers track these activities through a security sign off or waiver process.Finally, do not assume that since a previous version of Exchange ran in a given environment, the AV conversation can be skipped! Take the time to ensure that all teams are on the same page, and that the correct exclusions are applied. Exchange 2010 has different exclusions compared to Exchange 2003! Additionally there will likely have been staff changes over the years since older AV policies were defined so have this critical conversation to prevent a critical situation – aka a CritSit!Cheers,Rhoderick.
The history of Microsoft Exchange Server begins with the first product - Exchange Server 4.0 in March 1996 - and extends to the current day.Microsoft had sold a number of email products before Exchange. V2.0 (written by Microsoft) was replaced in 1991 by 'Microsoft Mail for PC Networks v2.1', based on Network Courier, which Microsoft had acquired. When the original version of Exchange Server was sold to the public, it was positioned as an upgrade to 3.5.Exchange Server was an entirely new -based mail system with a single database store that also supported directory services. During its development, Microsoft migrated their own internal email from a -based system to Exchange Server from April 1993, with all 32,000 Microsoft mailboxes on Exchange by late 1996.The directory used by Exchange Server eventually became Microsoft's service, an -compliant directory service. Active Directory was integrated into as the foundation of.
Contents.Exchange Server 4.0 The first release of Exchange outside of Microsoft was Exchange Server 4.0 in March 1996, with five being released over the next two years. Exchange Server 5.0 Initial release: May 23, 1997.Introduced the new Exchange Administrator console, as well as opening up 'integrated' access to -based networks for the first time. Unlike Microsoft Mail (which required a standalone SMTP relay), Exchange Server 5.0 could, with the help of an add-in called the Internet Mail Connector, communicate directly with servers using SMTP. Version 5.0 also introduced a new interface called Exchange Web Access, which was rebranded as in a later.
Along with Exchange Server version 5.0, Microsoft released version 8.01 of, version 5.0 of the and version 7.5 of to support the new features in the new version of Exchange Server.Exchange Server 5.0 introduced a number of other new features including a new version of Outlook Web Access with calendar support, support for and v3 clients and the Deleted Item Recovery feature.Exchange Server 5.5 Initial release: Nov. 5, 1997, released to manufacturing.The last version of Exchange Server to have a separate directory, SMTP and NNTP services. There was no new version of Exchange Client and Schedule+ for version 5.5, instead version 8.03 of Microsoft Outlook was released to support the new features of Exchange Server 5.5.It was sold in two editions: Standard and Enterprise. They differ in database store size, mail transport connectors, and clustering capabilities.Standard Edition Had the same 16 GB database size limitation as earlier versions of Exchange Server. It included the Site Connector, MS Mail Connector, Internet Mail Service (previously 'Internet Mail Connector'), and Internet News Service (previously 'Internet News Connector'), as well as software to interoperate with,. Enterprise Edition Had an increased limit of 16 TB (although Microsoft's best practices documentation recommends that the message store not exceed 100 GB). Adds an connector, and interoperability software with.
Introduced two node capability. Exchange Server 2000 Codenamed 'Platinum', this version overcame many of the limitations of its predecessors. For example, it raised the maximum sizes of databases and increased the number of servers in a cluster from two to four. However, many customers were deterred from upgrading by the requirement for a full Microsoft Active Directory infrastructure to be in place, as unlike Exchange Server 5.5, Exchange 2000 Server had no built-in Directory Service, and had a dependency upon Active Directory.
The migration process from Exchange Server 5.5 necessitated having the two systems online at the same time, with user-to-mailbox mapping and a temporary translation process between the two directories. Exchange 2000 Server also added support for, but that capability was later spun off to.Exchange Server 2003 Codenamed 'Titanium', this version can be run on (with 4) and, although some new features only work with the latter.
Like Windows Server 2003, Exchange Server 2003 has many compatibility modes to allow users to slowly migrate to the new system. This is useful in large companies with distributed Exchange Server environments who cannot afford the downtime and expense that comes with a complete migration.It made the migration from pre-2000 versions of Exchange significantly easier (although still involved the same basic steps), and many users of Exchange Server 5.5 waited for the release of Exchange Server 2003 to upgrade.
The upgrade process also required upgrading a company's servers to Windows 2000. Some customers opted to stay on a combination of Exchange Server 5.5 and, both of which are no longer supported by Microsoft.One of the new features in Exchange Server 2003 is enhanced disaster recovery, which allows administrators to bring the server online more quickly. This is done by allowing the server to send and receive mail while the message stores are being recovered from backup. Some features previously available in the Microsoft 2001/2002 products have been added to the core Exchange Server product, like and server-side, while the Mobile Information Server product itself has been dropped. Also new is the ability to drop inbound e-mail before being fully processed, thus preventing delays in the message routing system. There are also improved message and mailbox management tools, which allow administrators to execute common chores more quickly.
Others, such as Instant Messaging and Exchange Conferencing Server have been extracted completely in order to form separate products. Microsoft now appears to be positioning a combination of, and as its collaboration software of choice. Exchange Server is now to be simply e-mail and calendaring.Exchange Server 2003 added several basic filtering methods to Exchange Server. They are not sophisticated enough to eliminate spam, but they can protect against DoS and mailbox flooding attacks.
Exchange Server 2010 logoExchange Server 2010 was in May 2009, and reached on November 9, 2009. New features. DAG (Database Availability Groups): SCC, CCR, LCR and site resiliency functionality SCR have been replaced by DAG. It provides database-level high availability (as opposed to server level) and supports a number of copies of each database (number based on Exchange Edition) and flexible configuration (databases copies may be added/ removed at will without requiring major server reconfiguration). Client Access Server (CAS): High availability for the Client Access Server role is provided by using Client Access Server (CAS) arrays. A CAS array can contain multiple Client Access Servers in an Active Directory site and provide a single name endpoint for client connections. CAS arrays cannot span multiple Active Directory sites.
Mailbox Server Role may be combined with the Client Access Server: In Exchange Server 2007, a clustered mailbox server could not be combined with any other roles. In Exchange Server 2010, the Mailbox Server Role may be combined with the Client Access Server and/or Hub Transport roles, regardless of whether or not the mailbox server participates in a Database Availability Group.
However, since Database Availability Groups use Windows Failover Clustering, and Microsoft does not support the combination of Windows Failover Clustering and Windows Network Load Balancing on the same server, a multi-role deployment will require the use of a 3rd party load balancer to provide load balancing and fault tolerance for the Client Access Server role. RPC Client Access: With the introduction of the RPC Client Access service, all Outlook clients access their mailbox database through the Client Access Server role.
This abstraction layer allows for improved load balancing and redundancy and minimal client impact in the event of a database level.-over ('switchover' or 'failover') event. Cost savings in required hardware: Exchange Server 2010 provides cost savings in required hardware. Storage performance requirements (measured in IOPS: Input/output operations per second) have been reduced by approximately 70% over Exchange Server 2007, and by approximately 90% over Exchange Server 2003. According to a case study, Microsoft IT was able to reduce hardware costs by 75% during the migration from Exchange Server 2007 to Exchange Server 2010. Personal Archive: Exchange Server 2010 extends the large mailbox support introduced in Exchange Server 2007, and also introduces a Personal Archive feature to allow messages to be retained longer without the need for a third-party archival system.
Best Antivirus For Exchange Server 2016
The Personal Archive is implemented as a secondary mailbox for archive-enabled users, and in Exchange Server 2010 Service Pack 1, the Personal Archive may be located on a different database than the primary mailbox, which may reside on a different disk if desired. Backup can be performed via multiple solutions like Handy Backup or Acronis. Recoverable Items: The compliance and legal search features have been enhanced. What was formerly known as the 'Dumpster' in previous versions of Exchange (a special storage area for messages that have been deleted from the Deleted Items folder or 'permanently deleted' from a regular folder, such as the Inbox) has been evolved into the Recoverable Items folder in Exchange Server 2010. If configured appropriately, the Recoverable Items folder allows for a 'tamper proof' storage area (users cannot circumvent the Recoverable Items folder to bypass legal discovery), which also provides a revision history of any modified items. Administration delegation: Can now be performed at a granular level due to Exchange Server 2010's implementation of Role Based Access Control (RBAC). Users and administrators can be given extremely fine-grained abilities for functions provided both within the Exchange Management Console or Exchange Management Shell and in., August 26, 1991, Computerworld.
Paul Korzeniowski (1992). Software Magazine. Archived from on 16 May 2013. Retrieved 28 October 2012. ^. Archived from on May 7, 2005. Dr.
Nikolai Bezroukov. Retrieved 28 October 2012. Redmond, Tony (31 March 1997)., Microsoft.com. Vidhya (1992). Software Magazine. Retrieved 28 October 2012.
Markus Klien (2003). Retrieved 28 October 2012. From the original on July 6, 2007. Retrieved 28 October 2012.
Retrieved 28 October 2012. Redmond Channel Partner.
Retrieved 8 April 2014. Retrieved 28 October 2012. (1 March 2006). The Microsoft Exchange Team Blog. Retrieved 28 October 2012.
Elizabeth Montalbano (17 January 2007). Retrieved 28 October 2012. Retrieved January 27, 2016.
Rodney Buike. Retrieved 2008-12-19. Elizabeth Montalbano (9 November 2009). Beyond Binary - CNET News.
Retrieved 28 October 2012. The Exchange Team Blog. 11 October 2012. Retrieved 28 October 2012.
Retrieved 17 November 2012. Rajith Enchiparambil (2013). Retrieved 11 February 2013. Mary Jo Foley (23 July 2012). Retrieved 28 October 2012. Paul Cunningham (2012).
Retrieved 28 October 2012. Retrieved 28 October 2012. Retrieved January 27, 2016.
Antivirus Windows 2003 Server
MADRID, June 24 2003 Panda Software has announced the availability of its new Panda Antivirus for Exchange Server. This powerful new antivirus solution has been designed using the most advanced anti-malware technology to offer complete protection for Microsoft’s new Exchange Server 2003 messaging and collaboration platform.Panda Antivirus for Exchange Server is based on Microsoft’s latest VirusScanning API version 2.5 in order to ensure seamless integration with the new Exchange 2003 platform.
Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |