Sendmail/DNS Wackiness.

["Jay Benfield" <jay@xxxxxxxxxxxxx>]

Hi all -

I'm assisting a colleague in setting up a server running RedHat 6.0,
specifically pertaining to Sendmail. We're working with all *stock* stuff.
Server is connected directly to the net.

I was not involved in the installation process, but called in after problems
started occuring. She had attempted to get everything going using a couple
different X windows GUI tools - to no avail. I have a fundamental distrust
of all of the handy x utils, maybe I'm odd :-)

Anyway, this is the message I get when I try to send a message to myself (an
outside addy) from the server:

<!-- SNIP SNIP -->

----- Transcript of session follows -----
550 <jay@carrinter.net>... Host unknown (Name server: (IP ADDRESS OF HOST):
host not found)

    [ Part 2: "Delivery Status" ]

Reporting-MTA: dns; DOMAIN.COM
Received-From-MTA: DNS; DOMAIN.COM
Arrival-Date: Sun, 12 Sep 1999 19:49:48 -0400

Final-Recipient: RFC822; jay@carrinter.net
Action: failed
Status: 5.1.2
Remote-MTA: DNS; IP ADDRESS OF HOST

<!-- END SNIP -->

It should be noted that mail CAN be received from outside sources and can be
sent to local users. I can also do nslookups from the machine using the
local name server. Server's resolv.conf is set to look at itself - all
secondary NS stuff has been removed temporarily for testing purposes.

I really believe it's something to do with DNS BUT...

I've ...

... tweaked and corrected all DNS zone files and configs

... re-installed the name server

... re-installed bind

... re-installed sendmail and the sendmail.cf

... restarted named & sendmail many, many times after trying many, many
things :o)

In /var/log/messages I had this message a couple of times:

Sep 12 19:29:35 SERVERNAME named[9387]: ctl_server: bind: Address already in
use

I'm not sure if that's related.

Any help on this matter would be greatly appreciated. I've got several
RedHat 5.2 servers up and running, and I've pretty much duplicated their
configurations - not sure what I'm missing (if anything).

Thank you very much in advance.

Jay Benfield
Carr Internet