Ok, probably posting in the wrong section since this isn't really a much of a security question but fits more into the miscellaneous side of things....

We host several companies mail using Imail 7.x. This is running on a Windows 2000 dual processor machine, PII 400MHz I think with somewhere around 384MB of Memory. Connected to the internet with a 768Kb frac T-1. When some of the clients pull mail from our server they seem to get more than one copy of their messages. This happens in both outlook and outlook express across several platforms, e.g. Win 98, Win 2k, Win XP, etc. Now happens most with clients that have a large amount of messages on the server. If they had 100 messages when they came in it would go out and grab them once, then if the client hit the send/recieve button again it would grab some of them a second time. Not all just some of the latest ones. So I think that it's not clearing out all their old emails by the time they hit the send/recieve button again. Now I was running Imail 6.x before and so I contacted Imail... They told me I had to upgrade before they could help me, so I did and it still does the same thing. I emailed again and didn't get any useful information out of them. Anyway what I was wondering was if any of you had heard of this happening with Exchange or another mail server. Or if this could possibly be an Outlook/Outlook Express thing. Clients have been using Outlook Express 5.0+ and Outlook 2000 or newer.

Thanks,
Greg