[Linux-users] Sendmail upgrade

[Stuart Biggerstaff]

So it's working now.  I think what I did that made it work is going back
to default CentOS configuration files and editing them, though I can't
really be sure.  I did that yesterday evening, and it didn't seem to fix
things.  But just after this post, I edited the config so it's listening
on both the loopback and its actual IP, restarted sendmail, and it
started working.  I had been using one configuration or the other for
several hours, restarting after changes, and no result.

And thanks to Vu and Jay.  Vu's post at least pointed us at something
that told us it was working.  And I'm not sure going to BSD (or keeping
Linux and going to qmail) is the answer--since the thing usually "just
works" until a version upgrade--but we have a test box set up during the
incident that we may try some things on.



Stuart Biggerstaff
Systems Technician
Linda Hall Library of Science Engineering & Technology
5109 Cherry St.
Kansas City, Missouri 64110-2498

Phone:	(816) 926-8748
	(800) 662-1545 x748
FAX:	(816) 926-8790
URL:	www.lindahall.org 
-----Original Message-----
From: linux-users-bounces at pananix.com
[mailto:linux-users-bounces at pananix.com] On Behalf Of Vu Pham
Sent: Wednesday, August 22, 2007 11:42 AM
To: linux-users at linux-sxs.org
Subject: Re: [Linux-users] Sendmail upgrade

On Wed, 2007-08-22 at 11:31 -0500, Stuart Biggerstaff wrote:
> In one of those "make a bunch of changes to a server then quit"
> situations, we have a server in our DMZ that is supposed to be sending

> mail to our regular mailserver inside the LAN, but isn't after an OS 
> upgrade from an older RHEL to CentOS 5.0.  If I add my desktop's VLAN 
> to Relay Domains, I can bounce mail from there to the mailserver with 
> SMTP, but mail originating on the server itself isn't leaving.  I 
> suspect we have run afoul a default restriction in a newer version of 
> Sendmail or one that is a recent default instituted by Redhat.  We've 
> been looking through documentation and searching the web, but so far 
> nothing has helped--so I'm thinking we are missing something basic.
> 
> Anyone have a suggestion for the first or second things to look at?

If you manually telnet on the problem server to 127.0.0.1 via port 25
and send some test emails via smtp commands, do you see any error
message ?

Vu

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