This is the error that I'm seeing in the mail log I never got the message from How-To Forge (which I'm guessing was an email that there was a response to a thread I started). What does the line : Server Configuration error mean? edit: I removed the line check_policy_service from the postfix config, and mail is coming and going without problems. I'll re-check the spf how-to to see what I did wrong. edit 2 - I missed the line "check_policy_service unixrivate/policy" in my postfix config...thanks.