Cyrus Service Definitions ************************* The Cyrus IMAP server provides service interfaces via either TCP/IP ports or Unix domain sockets. For the former, Cyrus requires that there are proper entries in the host's "/etc/services" file. The following are required for any host using the listed services: pop3 110/tcp # Post Office Protocol v3 nntp 119/tcp # Network News Transport Protocol imap 143/tcp # Internet Mail Access Protocol rev4 nntps 563/tcp # NNTP over TLS imaps 993/tcp # IMAP over TLS pop3s 995/tcp # POP3 over TLS kpop 1109/tcp # Kerberized Post Office Protocol lmtp 2003/tcp # Lightweight Mail Transport Protocol service smmap 2004/tcp # Cyrus smmapd (quota check) service csync 2005/tcp # Cyrus replication service mupdate 3905/tcp # Cyrus mupdate service sieve 4190/tcp # timsieved Sieve Mail Filtering Language service Make sure that these lines are present or add them if they are missing. Controlling Service Ports and Sockets ===================================== The actual port or socket used by any given service may be controlled in the service definition line for that service in the cyrus.conf(5) file, using the "listen=" directive. Please consult the cyrus.conf(5) man page for details.