On 5/5/2011 2:21 PM, IMail Admin wrote: > My business is so small any more than I could imagine using my smart > phone to run the mail server. If it’s the smtp32.exe process causing > the crash, then that would imply to me that I’ve got a lot of outbound > messages all at once. I just don’t see how this could happen. I’m > guessing that we’ve got no more than a couple hundred mailboxes spread > over 30 domains, and no lists larger than 200. So how do I find out > where all this outbound stuff is coming from? And is there a setting I > could use to limit the number of outbound messages sent (or processed) > at one time?
The trick is, it's not controlled by outbound messages, but inbound messages. The way IMail works is to accept all incoming connections (essentially) and store the messages in the spool. Then it calls it's delivery agent (SMTP32) to get those messages where they need to go. When a message processing system like a mail filter wants to hook into IMail it (or one of it's components) takes the place of SMTP32, processes the message for itself, and then calls SMTP32 itself to continue the chain of processing. (There are exceptions, of course and the above is oversimplified). What all of that means is that the number of times SMTP32 is called is partially controlled by the number of messages you are receiving -- and any publicly accessible MTA is subject to spam storms that can include large numbers of messages. If your software is configured to allow too many instances of SMTP32 then a sizable spam storm will trigger the "mystery heap" problem. The solution generally is to reduce the number of processing threads you allow. Since your system is small (as you say) this shouldn't be a problem and should resolve the problem. Hope this helps, _M -- Pete McNeil, President MicroNeil Research Corporation www.microneil.com 703.779.4909 x7010 --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to imail...@declude.com, and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
