Every so often, one of the users on our network will receive an email over and over again. This is a seemingly random problem. More often than not, the email includes an attachment, and the attachment is almost always corrupted. But there have been exceptions to both of these characteristics.
These are legitimate (not SPAM) emails from senders who have sent many emails before and since the repeating email. The same sender coould send another email on thesame day and the problem does not recur. I have been completely unsuccessful in trying to recreate the problem. There doesn't seem to be any rhyme or reason to the issue.
We are using Windows Small Business Server Premium 2003 with Microsoft Exchange 2003 as the email server. I've read through several different questions that seem to describe a similar problem. But the answer is almost always something to do with POP3. We are NOT using POP3. We are using SMTP. I've also seen one question where the problem was identified as SPAM SOAP. We are not using that product.
We are using GFI Mail Archiver 4 to archive our email, and GFI Mail Essentials for SPAM filtering. We also use Watchguard Firewall X700 Core. I read one question where a Hardware Firewall was identified as a possible cause of a similar problem. But after reading the referenced document, I was unable to resolve this problem.
Most of the people who have asked this question have ended up not getting a satisfactory resolution, and usually the question ends up being abandoned. I am asking again because my users are getting quite frustrated and are asking me to fix the problem. If you have any useful information or know of anyone who has had this problem and resolved it, I would be very grateful to know the answer.
Thank you in Advance
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