Hi, I'm running a pair of postfix-servers in different data-centers (different ip networks) for outgoing-only delivery. once in a while my providers /22 appear on public blacklists, so mails from my nodes also gets rejected.
For this, i have now a third backup-instance in another data center that is not visible to my users and only fairly with dummy mails used to keep reputation up and good. Howto re-route traffic on demand with postfix in case, ip-networks get blocked again? How do others handle this? Thank you. Stefan
