I received a message today from the network admin of USFamily.net. They appear to be a small ISP in Minnesota that resells XO Communications' dial up accounts and Qwest's DSL accounts. This guy complained that my server was sending him "unnecessary and irresponsible bounce messages".
Now, the "unnecessary and irresponsible bounce messages" in question are bounces of messages containing potential virus attachments (*.pif, *.exe, *.scr, etc). I have these defined (like everyone else) in /etc/antivirus.exim. He is complaining the the user(s) with viruses aren't his users, and that the virus is forging the From: address, so his users are getting bounce messages from me that they don't deserve, and this is causing him to have to do more work. (I guess he didn't read his job description)
He doesn't seem to care that bounce messages like these are standard practice and therefore has blocked my server from sending him emails entirely.
My questions are:
1. Should I care? is it worth my time to resolve this problem to appease one lazy sysadmin? I do have a few clients with online stores on my server that need to send emails to their customers. I don't want to prevent my customer's customer from getting their online order invoices, etc.
2. Is there any way, with Exim, to block messages with attachments like these while the SMTP session is still open, so that bounce messages never need to be sent?
3. If #2 is not possible, can I just stop sending him bounce messages? How would I do that in Exim?
Thanks guys!
-Josh
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