Checking for Open Relays?

Any advice on how to check for open e-mail relays, and how to close them on a Linux server running Plesk 7.5?

 

There is a testing service available here at http://www.abuse.net/relay.html

Today's mail servers block this in their default configurations. But, it is still a good idea to check. Each mail server's home site will have documentation on configuration changes needed to stop this from happening.

 

Hello,

try this one:

http://www.pagasa.net/test-smtp-server/

Cheers !
Thibaut

 

use nessus security scanner for detailed scans .