Symptoms
Courier-IMAP authentication does not work after new qmail host is installed
Cause
x84_64 courier-imap package was installed on the server, whereas POA supports only i386 courier-imap.
Resolution
- Remove the not supported x86_64 version of package courier-imap and courier-auth
- Install courier-imap-*.parallels.i386, courier-authlib-*.parallels.i386
Make sure "maxperip" set to 200
$TCPD -maxperip=200 -maxprocs=100 -pid=$POP3D_PID_FILE 110 $POP3_ARGS $TCPD -maxperip=200 -maxprocs=100 -pid=$POP3D_SSL_PID_FILE 995 $COURIERTLS -server -tcpd $POP3_ARGS
in file
/etc/init.d/courier-imap
4.Restart courier-auth, courier-imap service:
# service courier-auth restart
# service courier-imap restart