The Imail server in question, which is actually an 8.04 system, only receives a burst of about 3500 emails within a few minutes. Some of the receipients of these emails receive them immediately and others are not receiving them until as much as 12 to 24 hours after they are sent. Which is the problem. Trying to provide emails to users in a timely fashion.
An IMail server can typically handle about 2,500,000/X E-mails a day (where "X" is the number of seconds to scan/deliver an E-mail), if they are evenly distributed, and the server is well tuned (disk partitions well designed, little fragmentation, CPU fast enough, etc.). If it takes you an average of 5 seconds to scan/deliver an E-mail, that's 500,000 E-mails/day or about 5-6 per second (about 350/minute). That means that for the burst of 3,500 E-mails, it would need to be spread over about 10 minutes. If it takes an average of 10 seconds to scan/deliver an E-mail, you would need to spread it out over about 20 minutes. If you can deliver the E-mail in an average of 1 second (if you send it to a gateway or gateways), then it can be done in about 2 minutes. But if you exceed those numbers, there's a good chance that either [1] IMail will stop responding to SMTP connections (causing the sending program to re-try it later, if it is well behaved), or [2] IMail will store the E-mail to the hard drive and wait to deliver it later (the amount of time for delivery would depend on your SMTP retry settings, the version of IMail you are running, and if IMail v7 or earlier, whether or not you are running a Declude program).
-Scott
---
Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000.
Declude Virus: Ultra reliable virus detection and the leader in mailserver vulnerability detection.
Find out what you've been missing: Ask for a free 30-day evaluation.
--- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]
To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
