Would an autoresponder for my domain email trigger a listing in CBL databases in response to spam received?
Monday, June 8th, 2009 at
9:34 pm
Over the past several weeks, my mail server ended up in the CBL/XBL block lists, with some domains refusing to accept my email. I don't have an open relay or an open proxy, and my anti-virus and patches are up-to-date. I wonder if this would be caused by my autoresponders to the postmaster@domain.com address, which, when replying to spam emails with false addresses, might be causing the server receiving my reply to think that my auto-response is spam.
Tagged with: anti virus • auto response • autoresponders • cbl • email • false addresses • mail server • open relay • patches • postmaster • proxy • reply
Filed under: The NPN
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If you're sending mail to the postmasters of domains forged into spam headers, it's entirely possible you're hitting some address that feeds the CBL. Note that it's IP-based, not domain-based, and you can look up your IP address to see its status.
My advice is not to use an autoresponder on spam; the FP rate's too high unless you have a really, really good parser.