Originally Posted by toastmaster
I have thought about using postfix to strip the headers out, using the postfix command header_checks, but just curious if you have any advice on the subject.
This wont help at all, because other mailservers are performing these checks themself. Today all dynamic IP addresses from DSL and dialin lines are blacklisted.
The solution is to use a mail relay server from your ISP as smartrelay for your local mailserver. So all outgoing mail is sent by the Mailserver from your ISP which is hopefully not blacklisted