Hello, Been about 2 days of digging around the net and going trough the documentation and I am running out of ideas.
I have this current situation: Both mail servers are Centos ( I didn't choose the OS ) Routing works very well ping all around to all around in and out of the vpn Machine 1: -One extensive network behind an dyn IP adsl , -3 subnets and lots of data going out to the world from there. -1 OpenVPN tun link to machine 2 -Blocked outgoing Port 25 -Normal net gateway output. -Local postfix setup to keep the local traffic local (Works OK) -Forward outbound traffic to machine 2 (Works OK) Machine 2: -Cloud machine with fixed IP -Open port 25 in and out -OpenVPN tun link to machine 1 -Disabled local delivery ( I don't want to maintain a local file there, I know bouncing users at the gate would be good too ) -Receives mail traffic from the outer world and delivers it to postfix on machine 1 (works OK) -Postgrey (working good) -Spamassassin + clamav + amavisd-new (installation later) My trouble is -The machine 2 refuses to relay the mails generated from inside. One of the idea was to sign each other's server keys and use TLS auth... but I haven't seen much documentation about this. Would this make both server trust each other ? You will probably ask me to send the config files, so I am ready for that, but what's the favourite paste board around here ? Or just attach the whole thing, or paste it in the mail .... Thank you for the help. Philippe
