Name: sync_port
Type: STRING
Default-Value: NULL
Last-Modified: 3.0.0

Name of the service (or port number) of the replication service on replica
host.  Prefix with a channel name to only apply for that channel.  If not
specified, and if :imapdconf:`sync_try_imap` is set to "yes" (the default),
then the replication client will first try "imap" (port 143) to check if
imapd supports replication.  Otherwise it will default to "csync" (usually
port 2005).
