Change Mail sending IP - Postfix

Change Mail sending IP

Open the postfix configuration file, /etc/postfix/

Find if there is an entry as follows, in the postfix configuration file.

smtp_bind_address =

If there isn't any entry of smtp_bind_address, you have to create it.

Change the value of smtp_bind_address = to the desired IP.

Once you have made changes in the configuration file, you have to restart the postfix service.

[root@server ~]# /etc/init.d/postfix restart

You can check whether the new IP is loaded using the following command.

[root@server ~]# postconf smtp_bind_address
smtp_bind_address = yyy.yyy.yyy.yyy