- Plesk 11.0 for Linux
- Plesk 11.5 for Linux
- Plesk 12.0 for Linux
How to configure Qmail to use specific IP address for outgoing email?
Specify the IP in /var/qmail/control/outgoingip and restart qmail service
You may also configure routing rules as per the article: http://kb.parallels.com/en/1190 in order to achieve the same.