search for: smtpserver2

...$lan3 -d $publicip1 --dport $SMTP -j DROP \ Same rules we have for publicip2. But still we are not able to send emails from the $smtpserver running in the local lan to outside. Our requirement is like this smtpserver1 which is running postfix should only send/receive emails through publicip1 and smtpserver2 which is also running postfix should sends/receive mails through publicip2. We are able to receive emails both the public ips on the respective smtp servers but when we are sending emails to outside world it is sometimes going through both the public ips from a single smtp server. Any suggestion...