Sendmail cannot send to own domain

[McDougall, Marshall (FSH)]

What does your /var/log/maillog tell you?
I relay all our sub.domain type of mail off one server, and configure that
server specifically for that.  This way I config all of my other servers to
point at that one box and I only have to maintain one source of
relay-domains and LocalName type files.
Make sure your name resolution is working as well.

Regards, Marshall 

-----Original Message-----
From: Richard Hobbs [mailto:richard.hobbs at crl.toshiba.co.uk] 
Sent: Friday, September 10, 2004 10:28 AM
To: 'General Red Hat Linux discussion list'
Subject: Sendmail cannot send to own domain


Hello,

We have many RedHat 8.0 machines here, all of which are running
sendmail-8.12.8-9.80.

All machines can use their local sendmail to email their local users.

Also, all machines can use their local sendmail to email any address on the
internet.

However... None of the machines can use their local sendmail to email any
address on the same domain as the machine itself, for example:

The machines are called:

  host1.sub.domain.com
  host2.sub.domain.com
  host3.sub.domain.com

Each machine can happily email hobbs at mongeese.co.uk, for example, and
each machine can email username at localhost. None of the machines can email
username at sub.domain.com though.

How can this be setup, and why is it happening? The MX record for
sub.domain.com points to our rather old Cobalt Raq mail server.

Can anyone suggest a way to get sendmail to work properly for our own domain
as well??

Thanks in advance,
Hobbs.

-- 
Richard Hobbs (Systems Administrator)
Toshiba Research Europe Ltd. - Speech Technology Group
Web: http://www.toshiba-europe.com/research/
Email: richard.hobbs at crl.toshiba.co.uk
Tel: +44 1223 376964        Mobile: +44 7811 803377



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