Number of connections per IP / POP3

[Zeitkind]

FYI:
There is an issue with Mac OS X 10.6-users with Apple Mail. Apple decided to thread all outgoing pop3-connections, so if you have 10 pop-accounts on the same server, you open 10 connections.. and randomly the accounts go offline in the Mail program.
In ispcp the default for courier is 4 connections, so it would be nice to alter the setting in the GUI, otherwise you need to change it in /etc/courier/pop3d.
Not much of an issue, but if someone has this problem..