Plesk imap connections limit

By default Plesk IMAP maximum connections per IP is set to 4. If you are using an email client that checks multiple mailboxes, this limit is easily reached.

To increase the limit, edit "/etc/courier-imap/imapd":


Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

cpanel courier-imap config location

The same limits can be applied for cPanel running couriertcpd.

The location of the config file is at:


Restart courier-imap after config changes via:

/etc/init.d/courier-imap restart