what does ps -aux | grep courier-imap shows up
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.3/FAQ
root 23845 0.0 0.0 3472 432 ? S Jul20 0:00 /usr/sbin/courierlogger -pid=/var/run/imapd.pid -start -name=imapd /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 143 /usr/lib/courier-imap/sbin/imaplogin /usr/lib/courier-imap/bin/imapd Maildir
root 23846 0.0 0.0 3480 492 ? S Jul20 0:00 /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 143 /usr/lib/courier-imap/sbin/imaplogin /usr/lib/courier-imap/bin/imapd Maildir
root 23852 0.0 0.0 3292 432 ? S Jul20 0:00 /usr/sbin/courierlogger -pid=/var/run/imapd-ssl.pid -start -name=imapd-ssl /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 993 /usr/lib/courier-imap/bin/couriertls -server -tcpd /usr/lib/courier-imap/sbin/imaplogin /usr/lib/courier-imap/bin/imapd Maildir
root 23853 0.0 0.0 2548 492 ? S Jul20 0:00 /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 993 /usr/lib/courier-imap/bin/couriertls -server -tcpd /usr/lib/courier-imap/sbin/imaplogin /usr/lib/courier-imap/bin/imapd Maildir
root 23858 0.0 0.0 3308 432 ? S Jul20 0:08 /usr/sbin/courierlogger -pid=/var/run/pop3d.pid -start -name=pop3d /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 110 /usr/lib/courier-imap/sbin/pop3login /usr/lib/courier-imap/bin/pop3d Maildir
root 23859 0.0 0.0 2280 492 ? S Jul20 0:13 /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 110 /usr/lib/courier-imap/sbin/pop3login /usr/lib/courier-imap/bin/pop3d Maildir
root 23864 0.0 0.0 1700 348 ? S Jul20 0:00 /usr/sbin/courierlogger -pid=/var/run/pop3d-ssl.pid -start -name=pop3d-ssl /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 995 /usr/lib/courier-imap/bin/couriertls -server -tcpd /usr/lib/courier-imap/sbin/pop3login /usr/lib/courier-imap/bin/pop3d Maildir
root 23865 0.0 0.0 2292 468 ? S Jul20 0:00 /usr/lib/courier-imap/libexec/couriertcpd -address=0 -maxprocs=40 -maxperip=30 -nodnslookup -noidentlookup 995 /usr/lib/courier-imap/bin/couriertls -server -tcpd /usr/lib/courier-imap/sbin/pop3login /usr/lib/courier-imap/bin/pop3d Maildir
root 6166 0.0 0.0 4760 652 pts/0 S+ 08:35 0:00 grep courier-imap