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Praetor requirements

To operate Praetor you will need the following:

Note:

Keep in mind that Microsoft has placed limitations on the number of simultaneous IP sessions for their non-server editions of the Windows OS.   Both Windows 2000 and XP Professional is limited to 10 concurrent IP sessions.  Thus if yours is a site that receives a lot of email, you may need to use a Windows server edition.

Exceeding 10 connections is not catastrophic; the sending server will simply have to retry sending the email to you.  CMS estimates that the non-server editions will suffice for sites receiving less than 500 messages per hour or 5000 messages per day.

 

Note:

While Windows 2003 may have this framework already installed and known as ASP.NET, you will need to verify it.  Also, even if installed, you need to verify that ASP.NET is allowed to run as a web service extension under IIS.

See how this is done by clicking here.

Note:

Microsoft has limited MSDE to 8 concurrent queries.  The built-in "workload governor" will automatically inject a fixed delay of "a few milliseconds" when there are more than 8.  You can read more about this on Microsoft's website.

Exceeding this amount occasionally is not catastrophic but will likely slow down Praetor's message processing ability during the period whenever the this governor is activated.  CMS estimates that the non-server editions will suffice for sites receiving less than 500 messages per hour or 5000 messages per day.  Typically this will be for sites with less than 100 users.

Exceeding this limit constantly will be cause filtering issues, and in extreme cases it may appear that Praetor no longer filters as there are no new log entries.  Click here to read more about this situation.

Another limit found in MSDE is the maximum database size of 2GB.  Even if your site may not have many users, your volume of mail may eventually cause you to reach this database limit.  You need to make certain to regularly run the database cleanup tools to eliminate very old records to avoid reaching this limit.  Once this limit is reached Praetor cannot add any more records so that quarantined messages cannot be reviewed and released.

As of late June 2004, Microsoft announced plans to update MSDE with a follow-on product they call the SQL Server 2005 Express Edition.  The reason for the name change was "MSDE was confusing to customers and partners because many did not realize that it was associated with SQL Server."  CMS has not yet tested this as-yet beta version of MSDE's successor.

Windows 2000:

C:\WINNT\System32           or   download here

Windows XP:

C:\WINDOWS\System32   or   download here

Windows 2003:

C:\WINDOWS\System32   or   download here

 

Note:

Since 2002 Praetor dropped support for a dial-up connection and made  full-time Internet connectivity a requirement.  This decision was made for several reasons:

  • Dial-up significantly reduced the effectiveness in Praetor since messages destined to the LAN will be stored on the mail host of the Internet Service Provider.  As a result it would not be possible for Praetor to properly perform the SMTP transport level tests associated with the IP connection and declared domain in the initial HELO / EHLO greeting, essentially rendering all such transport tests useless.

  • General availability of high-speed, always-ON Internet connections.

  • Significantly increases the complexity in setting up Praetor.  Cooperation must be obtained from the ISP technical support department since they need to properly configure their mail hosts.

 

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