Set the max pop3 connections simutaneously for one ip

If you have more than 4 email accounts on a single domain, it’s very common you won’t be able to retrieve email from all of your accounts. By default, many servers have a MAXPERIP=4 setting in the pop3d file on the server. If you are having this problem, go to the /etc/courier-imap/ directory and vi the pop3d file. Find the line that reads MAXPERIP=4 and edit that line to read MAXPERIP=40. Escape out and :wq the edit.

Next restart the service with: /etc/init.d/courier-imap restart

Problem of too many simulataneous email connections should now be solved.