I have a postfix on a server and I have a webserver with a application that needs a stmp server to send out emails.

When I run a test from the webapp to the postfix server trying to send a email to a outside address I got:

A test email has not been successfully sent to the email address me@gmail.com: 572 <me@gmail.com>: Relay access denied

If I use a email address based on the postfix server it will send the email to that localize address

I need to have this postfix server configured to relay mail to outside addressed and anyone give me instruction on the configuration of the server to do this.

Is the webapp on a different server? Add its IP to postfix's mynetworks

You would place the ip of the server in the section marked as

mynetworks = 168.100.189.0/28, 127.0.0.0/8

How would you write the CIDR for the ip addres I am not sure how to add my servers ip to this.

for example if the ip of the webapp server was 24.24.222.50 ?

24.24.222.50/32 to allow only 24.24.222.50

http://en.wikipedia.org/wiki/Classle...ix_aggregation

1 members found this post helpful.

thank you so much that worked great.