Apple Mac OS X Server (Version 10.6 Snow Leopard) - Manual (Page 139)

Chapter 7 Ongoing System Management 139
IMAP and POP
Dovecot, the IMAP and POP service, loads the fully-qualified domain name at startup
and configuration reload. After a change, Dovecot must be restarted or given a SIGHUP
command, at a minimum).
You must also restart if you manually edited the listen or ssl_listen parameters.
SMTP
Postfix, the SMTP service, is very sensitive to network address and identity changes.
The information it stores about the DNS name, the IP address, and network interfaces
is only loaded once at service startup. To resume service after a change to the DNS
name or the IP address, you must fully stop the service, and restart it.
You must also restart it if you manually edited the inet_interfaces, inet_protocols,
smtp_bind_address, myhostname, or mydomain configuration parameters.
Mailing List
Mailman, the mailing list service, tracks the incoming and outgoing mail hosts by
reading them on startup. If you change the hostname or IP address, restart Mailman
for it to honor the configuration changes.
Antivirus and Antispam
ClamAV, the antivirus service, gets its listening address at startup as well. After making
any changes to the DNS name or IP address, you must stop and restart to resume
service.
SpamAssassin, the anti-spam service, gets its configuration information at startup and
can reload configuration data while running. To load new configuration data, restart
SpamAssassin or give it a SIGHUP command, at a minimum.
Certificates for Mail Services
Mail servers that use SSL need new certificates. You might need to regenerate or
repurchase the certificates. Use Server Admin to import the certificates, then configure
each service’s new certificate.
Understanding IP Address or Network Identity Changes on
Collaboration Services
Collaboration services provide tools to coordinate people and time. Collaboration
services include:
Calendar service Â
Address Book service Â
iChat service Â
Certificates for collaboration services В