I am currently experience a problem with my Imail Server that I noticed around 4:00 pm yesterday. I checked the server and noticed that the Spool directory contained 78,000 files and was 500 MB in size.
The first questions are how much E-mail do you normally process, and how long did it take the spool to get to that size? For example, if you normally process 1,000 E-mails/day, that's 78 days worth of E-mail, which would indicate that there is a much larger than normal volume of E-mail (a spammer, virus, or mail loop would be the first suspects). If you normally process 200,000 E-mails/day, and the 78,000 files accumulated overnight, it could be a normal volume of E-mail that isn't being processed as normal.
Since I first noticed the problem, I have done the following: (1) changed to a server NIC in the Imail System (2) upgraded to Imail version 8.02 from version 7.15 (3) changed it so that messages that were going to Imail and then Exchange, just go to Exchange. The server still seems a little sluggish in processing the messages, but the spool directory is down to about 500K, with nothing in the overflow directory.
That's encouraging -- the E-mail is being processed, albeit slowly.
However, if I route the Exchange server traffic back through Imail, the spool gets extremely large
again and messages appear to be backing up in the overflow directory.
The first thing to do is identify whether your load recently increased significantly or not. If so, you need to identify the source of the increased load, and get rid of it (if appropriate).
The next step is to check the log files to see what is happening. Are there lots of warnings/errors? If you track an E-mail through the IMail and Declude log files, can you see if there is a long delay in delivering E-mail (for example, if your primary DNS server stops working, there may be long delays waiting for timeouts, which would slow down mail delivery)?
-Scott
---
Declude JunkMail: The advanced anti-spam solution for IMail mailservers.
Declude Virus: Catches known viruses and is the leader in mailserver vulnerability detection.
Find out what you've been missing: Ask about our 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/
