We installed a new ASA 5510 (ver 8.3(1)) on the weekend and since then have had one isolated email issue.
Here is the situation. We have a remote office that connects to us via IPsec site-to-site tunnel. They remote in to one of our servers and from that server email themselves PDF's. They have their own exchange server for general use, but the emails sent from our server go through our exchange server of course. The received email shows the user as the sender AND receiver. This previously worked fine.
Since installing the ASA though, users get the following error when they try to open the document:
"There was an error opening this document. The file is damaged and could not be repaired."
They tried this with a text file and the same thing occured.
I have disabled SMTP inspection and have omitted the remote office from the CSC SSM scanning. This has not helped. The remote office also has an ASA 5510 (ver 8.2) but no changes were made this weekend. No updates were applied to Exchange this weekend.
Previously my office was using a Cisco 1800, Cisco VPN Concentrator 3000 and Untangle gateway box. I replaced all 3 with the ASA (note: I'm fairly new to this position and that was one of the first things I knew had to happen!).
I'm at a loss as to what to do to fix this. Any help would be much appreciated!
EDIT: Forgot to add one other point. My supervisor is currently at this remote location and he can still email himself attachments from that particular server with no problem through the tunnel.
