>The email that spamcop sent doesn't give any details other than the evidence >of the spam and that they tracked it to my network.
did you see enough of the header to confirm it was your ip? >I have never had a problem with this customer before and do not really >suspect them of originating the spam. I suspect that they are running some >sort of proxy or vpn/firewall that is misconfigured. they they are still guilty. Are they relaying their outbound through you, or sending directly from their Dial-Up Line, DUL? >How can I determine the exact nature of the problem so I can contact the >customer and inform them of the problem as I'm sure they really won't know >whht to do? find out what mail client + server software they are running. are they running a squid or other proxy/cache? if they are sending their outbound directly, then ask them to relay through you so you can log. In fact, to protect them and you, block their acces to port 25 except for you SMTP server. >Are there any web sites that can run a series of spam relay tests that will >give useful info? try google for "open relay test" or similar. Len Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
