Aliaspostmaster Channel Option

Postmaster address recognition
Specifying the  option on a destination channel causes any messages addressed to the username "postmaster" (lowercase, uppercase, or mixed case) at the official channel name to be redirected to , where   is the official local host name (the    on the local channel). Note that Internet standards require that any domain in the DNS that accepts mail have a valid postmaster account that will receive mail. So this setting can be useful when a site wants to centralize postmaster responsibilities, rather than having separate postmaster accounts for separate domains. That is, whereas the   channel option controls what return postmaster address is used when a notification message is generated from the postmaster,   affects what is done with messages addressed to the postmaster.

See also:
 * returnaddress Option
 * ldap_domain_attr_report_address MTA Option
 * Notification messages
 * Postmaster addresses
 * official_host_name Option
 * Notification messages and postmaster messages channel options
 * Channel options