IMail is the only thing that runs on that server. We use MRTG to monitor the traffic on our network. Closer analysis of the server shows that the majority of traffic is POP3
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Imail server chewing bandwidth
Hi all,
We recently made 2 changes to our Imail server. First, we had to move to a new server with Windows 2003 server (from Windows 2000 Server). Second, we upgraded to 2006.22. Making these 2 changes has caused Imail to chew a full T1 from 8 am till 5 pm every day for 2 months. Any ideas?
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Answers
Sounds really odd.
Since POP3 is more or less plain text, you might be able to see what's happening in more detail; the IMail logs may show interesting info as well. Perhaps you're under some weird kind of attack. If just a few IP's are involved, maybe they can be blocked at the firewall.
I'm not an expert at that sort of phenomenon, but I'd begin with trying to see if the POP3 sessions are proper, like they have "user:username pass:password list" etc, or if they are flawed, or if they are rejected, or if it's one single client getting the same message(s) over and over, or somehting entirely different. The logs and/or some packet sniffing may give you the info you need.
Also make sure no windows-specific service has been unintentionally enabled and receives a lot of hacking attempts.
/RID
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by: ridPosted on 2007-10-24 at 03:17:43ID: 20137535
How did you determine it's IMail producing all the traffic?
What sort of traffic is this about?
/RID