Supported 3rd party components
Mail servers
1. MailEnable Standard 1.981
2. MailEnable Professional 2.37
3. MailEnable Enterprise 2.37
4. Merak 8.9.1
5. SmarterMail 4.2
6. MDaemon 9.6
7. hMailServer 4.4
8. CommuniGate Pro 5.1
is supported by Plesk 8.2