On 2/17/2014 11:13 AM, Adam Thompson wrote:
I'm looking for recommendations on what works well for people, since
this doesn't appear to be covered by the FAQ or AOBSD2E. I know
several ways to accomplish what I'm after, but none of them seem to
have any clear advantage over the other.
1. I have about a dozen OpenBSD systems running (5.4-RELEASE), all of
which share a common list of users, all of which generate email
automatically.
2. Only one of those systems is the designated mail server. I would
like all the other systems to immediately relay any and all email to
the mail server.
3. I don't want to have to manually maintain /etc/mail/aliases on each
and every system for each and every user; sooner or later I'll miss one.
4. I'd prefer to use smtpd(8) instead of sendmail(8), but I'm even
willing to run software from ports, if it's clearly
better/cleaner/smaller/etc.
So, I know I can achieve the effect I want by putting every user on
every machine in /etc/aliases with something like:
athompso athom...@central.mail.server
Or I can achieve the same effect by putting a .forward file in every
home directory on every machine, but both of these options are
laborious and thus error-prone.
I know how to do this with Postfix, but installing Postfix from ports
just to forward mail to a central mailhost seems like... overkill?
I think I might be able to remember how to do this with Sendmail, but
I'm not sure. I've stayed as far away from sendmail as I can.
And I'm not at all clear on how to accomplish this with smtpd.
I assume *someone* here must have a similar situation - what worked
(or didn't) for you?
Hi,
In the sendmail world, the "smarthost" functionality is what you would
leverage. It will forward all email to the host specified for it to
process. It makes for a very tiny sendmail.cf file.
I'm sure there is just as easy of a way in smtpd.
From /usr/share/sendmail/cf/openbsd-proto.mc
divert(0)dnl
VERSIONID(`@(#)openbsd-proto.mc $Revision: 1.12 $')dnl
OSTYPE(openbsd)dnl
dnl
dnl If you have a non-static IP address you may wish to forward outgoing
mail
dnl through your ISP's mail server to prevent matching one of the dialup
dnl DNS black holes. Just uncomment the following line and replace
dnl mail.myisp.net with the hostname of your ISP's mail server.
dnl
dnl define(`SMART_HOST', `mail.myisp.net')dnl
dnl
Cheers,
Steve W.
