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Re: Configuration help please.
> Dear Zmailer folks,
> I am reviewing MTAs with a view to replacing the use of sendmail on our
> mailhub. Rather than start in at the deep end of what seems a fairly steep
> learning curve on Zmailer config, I wondered if any other users had a
> similar configuration to ourselves and could provide us with a template.
> We have no direct connection to the internet. All mail to unknown hosts
> is batched via UUCP to our ISP with the source machine name hidden (ie.
> email@example.com appears as firstname.lastname@example.org).
I haven't specifically written a "mail hub" configuration to
rewrite addresses as to hide away actual hosts -- hadn't any
need myself for it.. All my setups are generally speaking
mailservers which consider some set of addresses as belonging
to the local machine.
That is, the local-delivery spool is at the local machine, and
all my systems use that same spool -- they do share it either
via NFS, or by reading from it eg. via POP or IMAP.
Now to come to think of it, it is likely that building a "mboxmap"
can point to individual hosts for actual local delivery at them
in per user basis.
Following is "merely" just thought out about how to do it,
without any actual systems doing it this way. (That I know of.)
> All incoming mail comes to our hub via SMTP (or UUCP if it's inbound from
> the Internet) where it is passed by SMTP to one of a pair of POP3 server
> hosts according to the addressee. At the moment this is done via the
> sendmail aliases file.
> joebloggs: joebloggs@pop1
> marybloggs: marybloggs@pop2
Unlike aliases, the mboxmap looks quite a bit different.
The mboxmap database has lines like following:
Left side: key without ':' terminating it. Rest: data.
The first two lines are according to the standard approach,
however you can be a bit "sneaky", and store to the local
/var/spool/PObox/ directory -- yes, you need to add one
symlink there into even more commonly used path ;-)
( or edit $MAILSHARE/cf/aliases.cf to change value
of POBOX=PObox to be: POBOX=mail, and then things
should be even simpler :-) )
Do note that the same mboxmap files should reside at each and
every of the mail accepting servers (symmetric configuration
there!) and the mailer's idea of $hostname should be
written into the FIRST field of the result. (My workstation
is mea.tmt.tele.fi, not plain "mea".)
Actually each machine can have identical databases, and
configration files sans ONE file. The different file is
usually residing at a path of: /etc/mail.conf and it
should claim unique $hostname, but common $mydomain for
all machines involved in the mboxmap-cloud. That way the
local-delivery is actually fully symmetric setup.
At the `mail.conf' you should also define SMARTHOST to be
a targer for the outbound deliveries. At all machines except
the one with UUCP it should point to the gateway, and there
it should point to the remote uucp target.
The mail.conf files:
At the relay:
SMARTHOST=that.uucp-gw.uk # Faked name
At all others:
The protocols you need to support ( list at router.cf ) are:
(I don't think you would need: protocols="routes smtp", but
I could be wrong there.. You should not need.)
The localnames database should list all variants
about the hostname that you are willing to accept,
including all the hostnames in the "mboxmap"-cloud:
And the routes database should have lines:
That is, all domains not matching your local identities
(as listed in 'localnames'), but within your $orgdomain
are routed thru an error channel to yield an error report.
However you need to add that error-form file to the system
> We do run BIND but only for local host lookup.
> We will also soon want to accept incoming internet mail with a different
> domain and pass this through via SMTP to a MS Mail server or possibly CC:
> Mail (Another department).
Just add more "routes" entries pointing to those, like:
> All our hosts are FreeBSD 2.x. (if that makes any difference).
It does not make any difference.
> I'd be very grateful for your help.
> Best Regards
> Robin Melville, Addiction & Forensic Information Service
> Nottingham Alcohol & Drug Team (Extn. 49178)
> Vox: +44 (0)115 952 9478 Fax: +44 (0)115 952 9421
> Email: email@example.com
> WWW: http://www.innotts.co.uk/nadt/
/Matti Aarnio <firstname.lastname@example.org> <email@example.com>