- Plesk 12.5 for Linux
- Plesk Onyx for Linux
- Plesk 12.0 for Linux
How to change outbound mail IP address for Postfix, if the primary IP address is blacklisted and mail is not going out?
In Tools & Settings > Mail Server Settings, choose Send from the specified IP address and select an address that was not added to a public blacklist, such as the Spamhaus or OpenBL lists. If None is selected, outgoing mail will not be sent.