[100793] in RedHat Linux List
Re: MX secondary, dns and sendmail - what's wrong?
daemon@ATHENA.MIT.EDU (Drew Mouton)
Mon Nov 23 11:21:17 1998
Date: Mon, 23 Nov 1998 10:18:29 -0600
From: Drew Mouton <drew@etool.com>
To: "Red Hat List" <redhat-list@redhat.com>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Okay - apparently, VooDoo was infecting my machines.
I restarted my two mailservers and main DNS server three times each - I'm
not exaggerating - testing in between. After the third reboot, it LOOKS
like serverB is relaying correctly.
I didn't do anything with config files in between restarts, yet now it
works: mail for "drew@etool.com" is only going to serverA.etool.com, it
isn't getting misdelivered to drew@serverB.etool.com; mail for other
domains seem to be relayed thru serverB to their correct pop boxes on
serverB. I guess if someone outside of my net (out of the US maybe) would
force a message to
Only prob is that last Friday I took out all refs to relaying on serverB
- so at the moment it'll relay anything. I'm about to re-implement
relaying only for our domains.
To that end, would somebody mind chiming in on anything else that has to
be done - other than what Aaron mentioned below?
Drew
it appears that around 11/20/98 1:25 PM, Aaron Holtz said:
> There are a few avenues of approach. If you want a machine to be
>able to relay certain domains and not others, see using the /etc/access
>file. You can put an entry in there like:
>
>
>domain.com RELAY
>
>This will allow relaying for this domain. However, as long as the
>anti-relay rulesets are turned on, you'll deny relay to other domains.
>You can also look at using /etc/mailertable. The mailertable will show
>how to route mail for a particular domain:
>
>domain.com smtp:10mx.host.net
>
>Remember, when sendmail fires up, it probes all local interfaces to see
>who it is know as. So if you have virtual IP's running on a box, sendmail
>will think it is supposed to accept mail for that domain. You can get
>around this using the mailertables as above, or use the following in
>/etc/sendmail.cf:
>
>O DontProbeInterfaces
>
>Restart sendmail and it won't look for those IP's. Not sure if I've
>offered any help, but let me know if I can expand further.
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