in Linux

Relaying mail in postfix

Recommended VPS for your FreeBSD or Linux Server + Custom Iso Allowed (Free $20 credit for limited time, grab it now by click Here)

We have new server configured, the problem is the ISP.

They not allow port 25 for sending mail.

Fortunately we have another existing postfix server .

After edit in new server, we can send email through existing server.

The only change to do is :

Edit, find relayhost line and add existing server hostname

like :

relayhost =

save and restart postfix.

To make sure it works you can see maillog and mailq .