Aliaspostmaster Channel Option
Postmaster address recognition (
aliaspostmaster 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
local-host is the official local host name (the
official_host_name 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
returnaddress channel option controls what return postmaster address is used when a notification message is generated from the postmaster,
aliaspostmaster affects what is done with messages addressed to the postmaster.