Set Postfix as Open Relay

Hello together,

here a little Explanation on how to set the Postfix MailServer as an Open Relay SMTP Server.

Just edit the File „etc/postfix/main.cf“ and change the following line:

mynetworks =

to:

mynetworks = 0.0.0.0/0

then restart the Postfix MailServer – like:

sudo service postfix restart

Now your Mail Server is an Open Relay.

You should only do this for Test Purposes. So It would be a major security Risk!

 

Have Fun!

Greetings burncycle