Hi,

I am using SENDMAIL 8.13.1-3 RHEL 4.5 which is a client of MS-Exchange Server (Advance Server 2003). Both the system in same domain.
Intranet is working very fine but while trying to mail outside like xyz@yahoo.com, it is showing the subject as error, I have tried with HElO, It is same. I have done authentication, but no improvement. In exchange server it is like "All all computers that successfully authenticate to relay, regardless of the list".

Help me, If any body can.

Thanking you in anticipation

Hi,

Its Quite surprising to me that no one can solve my issues.
Pointless to stay here anymore.

Good Bye

That's a childish attitude. In fact there are quite a few people here who can help, but we have lives of our own and don't spend 24 hours a day here. On top of that, relaying in sendmail is dealt with comprehensively at http://www.sendmail.org/tips/relaying.html.

Please read through the sendmail docs and feel free to ask questions about any problems you have with them. One way of doing this if all of your clients are sending to multiple domains, is to include support for the access db in sendmail.cf (use FEATURE(access_db) in your sendmail.mc file). You'd then add your local networks to /etc/mail/access:
Then generate the db with:

I ran into a problem at my new job and need help resolving it. I just started a job at a new institution, and the IT department is extremely Window-centric. At my previous job, I had my email set up so that the central server forwarded all my email to my local linux server, and I administered sendmail as needed. Everything worked great there. When I got here, I learned that I could not do that. They use Microsoft Exchange Server (version unknown to me), and it took two weeks simply to get someone to tell me the darn server names for setting up my email under linux (using kmail).

I got this done yesterday, and everything seemed fine as I was able to send and receive mail, or so it seemed. Turned out that I only tried to send mail within the institution, so it went through fine. Today I tried to send mail to an address outside the institution, and I got the following message:

Sending failed:
Message sending failed since the following recipients were rejected by the server:
djsuson@gmail.com (The server responded: "5.7.1 Unable to relay for djsuson@gmail.com")
The message will stay in the 'outbox' folder until you either fix the problem (e.g. a broken address) or remove the message from the 'outbox' folder.
The following transport protocol was used:
Purdue University-Calumet

It appears that the exchange server thinks the name entered in the To: field is who it is trying to relay for. I've sent mail outside the institution using the outlook web client, so I think (and am told) that the email account is okay. I don't have access to the server, so I can't make any changes there. I was told quite emphatically that I couldn't run a mail server, so I don't have sendmail running, nor do I see anything that I recognize as related to the mail system running when I do a ps command. Any suggestions on how I can fix this issue?

Thanks,
Dan Suson

Since it says that the recipient was rejected I don't think that it's a problem with the wrong field being used. Have you tried sending to a non-gmail domain? Also, are other users there able to send to the gmail.com domain?

Yes, I've tried to send to a number of off-campus sites, all with no luck. This morning I set kmail to send mail through my gmail account. While this works, it is not a solution to the problem. Any help would be appreciated.

If you can send direct to gmail but not via the Exchange server, it sounds like the problem is with the Exchange server. Are you required to authenticate to it? Can you try again and use Wireshark (used to be Ethereal) to sniff the packets when you try to send an email? It may give you more info about what is happening.

I've recently setup two Redhat Linux identical servers each one has Sendmail installed. Our company has a Microsoft 2000 exchange server. With one of the Linux servers I can send email to users on that exchange server. With the other I cannot and keep getting the following message:

From MAILER-DAEMON@pick.hypertech.com Wed Aug 15 16:55:15 2012
Return-Path: <MAILER-DAEMON@pick.hypertech.com>
Received: from localhost (localhost)
by pick.hypertech.com (8.13.8/8.13.8) id q7FLtFdC008122;
Wed, 15 Aug 2012 16:55:15 -0500
Date: Wed, 15 Aug 2012 16:55:15 -0500
From: Mail Delivery Subsystem <MAILER-DAEMON@pick.hypertech.com>
Message-Id: <201208152155.q7FLtFdC008122@pick.hypertech.com>
To: <root@pick.hypertech.com>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="q7FLtFdC008122.1345067715/pick.hypertech.com"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--q7FLtFdC008122.1345067715/pick.hypertech.com

The original message was received at Wed, 15 Aug 2012 16:55:14 -0500
from pick.hypertech.com [127.0.0.1]

----- The following addresses had permanent fatal errors -----
<jriden@hypertech.com>
(reason: 550 5.7.1 Unable to relay for jriden@hypertech.com)

----- Transcript of session follows -----
... while talking to hypertech.com.:
>>> DATA
<<< 550 5.7.1 Unable to relay for jriden@hypertech.com
550 5.1.1 <jriden@hypertech.com>... User unknown
<<< 554 5.5.2 No valid recipients

--q7FLtFdC008122.1345067715/pick.hypertech.com
Content-Type: message/delivery-status

Reporting-MTA: dns; pick.hypertech.com
Received-From-MTA: DNS; pick.hypertech.com
Arrival-Date: Wed, 15 Aug 2012 16:55:14 -0500

Final-Recipient: RFC822; jriden@hypertech.com
Action: failed
Status: 5.7.1
Remote-MTA: DNS; hypertech.com
Diagnostic-Code: SMTP; 550 5.7.1 Unable to relay for jriden@hypertech.com
Last-Attempt-Date: Wed, 15 Aug 2012 16:55:14 -0500

--q7FLtFdC008122.1345067715/pick.hypertech.com
Content-Type: message/rfc822

Return-Path: <root@pick.hypertech.com>
Received: from pick.hypertech.com (pick.hypertech.com [127.0.0.1])
by pick.hypertech.com (8.13.8/8.13.8) with ESMTP id q7FLtEdC008120
for <jriden@hypertech.com>; Wed, 15 Aug 2012 16:55:14 -0500
Received: (from root@localhost)
by pick.hypertech.com (8.13.8/8.13.8/Submit) id q7FLtE2F008119
for jriden@hypertech.com; Wed, 15 Aug 2012 16:55:14 -0500
Date: Wed, 15 Aug 2012 16:55:14 -0500
From: root <root@pick.hypertech.com>
Message-Id: <201208152155.q7FLtE2F008119@pick.hypertech.com>
To: jriden@hypertech.com
Subject: Test Email

This is a test.

--q7FLtFdC008122.1345067715/pick.hypertech.com--



I've seached through files such as /etc/hosts/ and /etc/mail/whatever and they all seem to be the same. Any help would certainly be appreciated. Thanks.