Thanks for all your collective help. I have now come up with a
configuration file which I think may be of use to others with the
following requirements:
1) All outgoing mail to be sent via an SMTP server
2) Local mail, except that for root/postmaster etc is delivered
to the same user on host B, assuming no alias or
.forward processing has occurred. root/postmaster mail is
always delivered locally via an appropriate alias.
3) Outgoing messages' from and reply-to headers containing the local
machine name(s) are rewritten as being from the same user on host B.
This is, for example, ideal for student machines within Cambridge
University. The root/postmaster aliases in /etc/aliases need to have
real- prefixes to force the local delivery.
The relevant bits of the configuration are given below, and I welcome
comments and improvements.
######################################################################
# DIRECTORS CONFIGURATION #
######################################################################
real_local:
prefix = real-,
driver = localuser,
transport = local_delivery;
system_aliases:
driver = aliasfile;
file = /etc/aliases,
search_type = lsearch
userforward:
no_verify,
driver = forwardfile;
file = .forward,
smart:
driver = smartuser;
new_address = ${local_part}@???
end
######################################################################
# ROUTERS CONFIGURATION #
######################################################################
smarthost:
driver = domainlist,
transport = smtp;
route_list = "* mole.bio.cam.ac.uk bydns_a"
end
######################################################################
# RETRY CONFIGURATION #
######################################################################
* * F,2h,15m; G,16h,2h,1.5; F,4d,8h
end
######################################################################
# REWRITE CONFIGURATION #
######################################################################
^(root|postmaster|mailer-daemon)@scalopus.bio.cam.ac.uk ${1}@??? Ffr
*@scalopus.bio.cam.ac.uk ${1}@??? Ffr
*@in.limbo ${1}@${primary_hostname} Ffr
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