- Plesk Onyx for Linux
The following options are not kept after switching IMAP/POP3 server from Dovecot to Courier-IMAP:
This is Plesk bug PPPM-9642 which will be fixed in future updates.
As a workaround set these values manually using following steps:
- Login to Plesk.
- Navigate to Tools & Settings > Mail Server Settings and set the required values for:
- Maximum number of connections (IMAP, POP3, IMAP over SSL / TLS or POP3 over SSL / TLS)
- Maximum number of connections for a user per IP address.
Note: Reverting back to Dovecot will revert the values back to the ones before changing to Courier.