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My mail server has 2 public IPs:
IP1: 1.1.1.1 (eth0)
IP2: 2.2.2.2 (eth0:1)
Currently my mx, a, ptr, spf records are pointing to the "2.2.2.2" ip, which i need to be for the mail server only,
But currently when i send any mail, the postfix 3.1.0 decides to send it on "1.1.1.1" ip,
I tried to make the master.cf:
smtps inet n - y - - smtpd
-o smtp_bind_address=2.2.2.2
smtp inet n - y - - smtpd
-o smtp_bind_address=2.2.2.2
relay unix - - y - - smtp
-o smtp_bind_address=2.2.2.2
But it still sends from the "1.1.1.1"
Any help please?
MohammedSimba
Posted 2017-10-29T13:33:30.050
Reputation: 135
Are these public IP addresses directly connected to the server? Or is there an intermediary router with NAT and/or port forwarding? – Appleoddity – 2017-10-29T13:34:58.877
Yes both are public IPs – MohammedSimba – 2017-10-29T13:35:27.743
http://www.postfix.org/postconf.5.html#inet_interfaces . There are indications there – A.B – 2017-10-29T16:07:37.333
I’m not sure if postfix has a specific option to handle this. But you should be able to do this with policy routing rules. You can route all traffic destined to/from port 25 over that particular gateway. – Appleoddity – 2017-10-29T16:52:46.323