Hi all. I manage a few postfix spamfilter gateways for my company.
They are doing a really god job of scanning mails and delivering them to customers mailservers. The way we implement this is using a catch-all address to accept all mail for customers domains, then scan the mail and try to deliver it to the customers mailserver. This is of course a less than ideal solution, as i´m currently accepting a lot of mails for remote-addresses that are non-existing. Which means a few 100k mails scanned every day just to have the remote server bounce it as the recipient does not exist. I then thought of using the "reject_unverified_recipient" parameter, thus letting the spamscanners probe the remote mailserver to see if the recipient is valid or the mail would bounce. My questions are: As the spamscanners are the best or primary MX´s for the customers domains, would postfix then just probe itself, and always get a positive answer due to my catch-all entry ? Or would postfix actually look at the transport map, and realize that it has to probe the customers server. ? And how would one go about controlling the destination of the probe-messages ? Any other obvious things I need to pay attention to in this situation ? Cheers -- Med Venlig Hilsen - Best regards Dennis - [EMAIL PROTECTED]
