How to make Postfix and SpamAssassin play nicely when using SPF
July 6 2009 Categorized Under: Mail Server, Servers No Commented
I happened to be looking at the raw headers of an email today and noticed something weird. The message had been sent to me from a local user on my server, so it had never actually left the server; however, SpamAssassin had given the message a couple of spam points because it said the SPF verification had failed. I double-checked the relevant SPF records and there was nothing wrong there, so I began to suspect there might be a bug in SpamAssassin’s SPF verification routine.
I tried sending an email from my server to a Gmail address (this is a good way to test SPF records, since Gmail adds headers to messages indicating whether the SPF verification succeeded). Sure enough, Gmail’s SPF verification succeeded Read more…