Using sendmail

antenneX antennex at swbell.net
Fri Jun 25 08:13:17 PDT 2004


----- Original Message ----- 
From: "Giorgos Keramidas" <keramida at ceid.upatras.gr>
To: "antenneX" <antennex at swbell.net>
Cc: <freebsd-questions at freebsd.org>
Sent: Thursday, June 24, 2004 2:08 PM
Subject: Re: Using sendmail


> [-- Format recovered from broken Outlook wrapping --]
>
> On 2004-06-24 13:18, antenneX <antennex at swbell.net> wrote:
> > Giorgos Keramidas <keramida at ceid.upatras.gr> wrote:
> > > On 2004-06-24 11:33, antenneX <antennex at swbell.net> wrote:
> > > > ....oops! I should have said please send any config examples
> > > > needed to do this...??
> > >
> > > Look at the file /usr/share/sendmail/cf/README near line 794:
> > >
> > > : mailertable     Include a "mailer table" which can be used to
override
> > > :                 [snip]
> > >
> > > You might also want to check out the rest of this file, [...]
> >
> > Okay, I know I still have messed it up. Tried the setup below, but
something
> > is wrong because of the errors shown and is not delivered to server
#2.
> >
> > Server #1 - IP 200.200.200.101
> > - DNS for mail.server2.net points here (was to 200.200.200.102 and
OK on
> > normal delivery)
>
> I hope you don't mean that the name "mail.server2.net" now points to
> 200.200.200.101.  Only the MX records for server2.net need to point to
> the first host, so that mail for the domain is delivered to this host.
>
> > - mail.server2.net in local-host-names
>
> IIRC, this isn't right.  You should only list mail.server2.net in the
> local-host-names of 200.200.200.102.
>
> > - In mailertable = mail.server2.net esmtp:mail.server2.net
>
> This seems ok.
>
> > Server #2 - IP 200.200.200.102
> > - has sendmail & pop3
> > - mail.server2.net in local-host-names
> > - has user "william"
>
> This seems ok too.
>
> > Send test mail: william at server2.net
> > ....get error:
> > SYSERR(root): mail.server2.net. config error: mail loops back to me
(MX
> > problem?)
>
> That's because mail.server2.net points to the address 200.200.200.101.
> When sendmail on that host tries to deliver the message as per the
> instructions of your mailertable, it discovers that the message is
sent
> back to itself!  A loop...
>
> - Giorgos

Giorgos: Thanks for your review of my setup & I did change the IP for
server2 back to 200.200.200.102 -- however, now the emails go straight
though the firewall port on server1 to sendmail on server2 and
apparently bypasses sendmail on server1. If it bypasses sendmail on
server1, I cannot use greylisting to filter the emails before being sent
over to server2.

I'm still missing something here.....



More information about the freebsd-questions mailing list