What I've done with my Exim configuration (after persuasion from Greg that
it's the Right Thing) is to allow postmaster@[our.ip.addresses] and no
other local parts. The relevant parts of the configuration are:
# ...
domainlist our_domains = @ : @[] : +local_domains : +relay_domains
# ...
allow_domain_literals
# ...
# note that qualify_domain is set to the service name not the machine
# name. this is important so that the router below doesn't cause a loop.
# ...
begin acl
# ...
smtp_rcpt:
# first acl item
accept recipients = postmaster@+our_domains
# ...
# ...
begin routers
# first router apart from some irrelevant magic
postmaster:
driver = redirect
domains = @ : @[]
local_parts = postmaster
data = postmaster@${qualify_domain}
# ...
--
Tony Finch <dot@???>
http://dotat.at/
