- Plesk Onyx for Linux
- Plesk Onyx for Windows
MailEnable Standard version 9.00 is installed on the server. Why DKIM support is absent in Plesk > Tools & Settings > Mail Server Settings?
To provide the DKIM support, Plesk uses the functionality of an external library (Linux) or of the mail server supplied with Plesk (Windows). The mail server requirements are as follows:
- Postfix, Qmail, SmarterMal, IceWarp, MailEnable Professional. Any modern version.
- MailEnable Standard. Starting from version 9.16.
Upgrade MailEnable using this KB article: