Solved, courier uses 1 connection per folder. There is a good email list at sourceforge about this topic. Change file /etc/courier/imapd as below: ... # Maximum number of connections to accept from the same IP address #MAXPERIP=4 MAXPERIP=155 Still reading about procmail. _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!