rpm -e courier-imap.i586
Stopping Courier-IMAP server:
   Stopping imap [  OK  ]
   Stopping imap-ssl [  OK  ]
   Stopping pop3 [  OK  ]
   Stopping pop3-ssl [  OK  ]

 Trying to unregister service courier-imap...  using /sbin/chkconfig
warning: /etc/courier-imap/pop3d.dist saved as /etc/courier-imap/pop3d.dist.rpmsave
warning: /etc/courier-imap/pop3d-ssl.dist saved as /etc/courier-imap/pop3d-ssl.dist.rpmsave
warning: /etc/courier-imap/imapd.dist saved as /etc/courier-imap/imapd.dist.rpmsave
warning: /etc/courier-imap/imapd-ssl.dist saved as /etc/courier-imap/imapd-ssl.dist.rpmsave