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Full Discussion: Sendmail Fails to send emails from Linux server.
Top Forums Shell Programming and Scripting Sendmail Fails to send emails from Linux server. Post 303003031 by mohtashims on Thursday 7th of September 2017 02:58:11 AM
Old 09-07-2017
RedHat
Quote:
Originally Posted by drysdalk
Hi,

You mention you’ve got your smart relay configured in sendmail.mc, but I wonder if it’s actually gone live in your sendmail.cf (the real config file which is generated from the first one).

Could you see what output you get returned for:

Code:
grep ^DS /etc/mail/sendmail.cf

please (assuming that’s the location of your sendmail.cf, naturally) ? Also, have you re-started Sendmail since you put the smart relay in place ?

Just a thought, as a discrepancy between your .mc and your .cf could potentially explain why Sendmail appears to be ignoring your smart relay, so to speak.

Here is the Output after restarting the smtp service
Code:
[root@development_techx mail]# grep ^DS /etc/mail/sendmail.cf
Output:
DS

Here is how I compile my /etc/mail/sendmail.mc

Code:
m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

This is how i then restarted the smtp service

Code:
[root@development_techx mail]# service sendmail restart
Restarting sendmail (via systemctl):                       [  OK  ]

This is the command i use to send the email from the same server.
Code:
echo "hello" | mail mohtashim@techx.com

This is what i see in the mail logs.
Quote:
Sep 7 06:52:55 Development_techx sendmail[13635]: v876qtD3013635: from=root, size=204, class=0, nrcpts=1, msgid=<201709070652.v876qtD3013635@techx.com>, relay=root@localhost
Sep 7 06:52:55 Development_techx sendmail[13636]: v876qt3c013636: from=<root@techx.com>, size=438, class=0, nrcpts=1, msgid=<201709070652.v876qtD3013635@techx.com>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
Sep 7 06:52:55 Development_techx sendmail[13635]: v876qtD3013635: to=mohtashim@techx.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30204, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (v876qt3c013636 Message accepted for delivery)
Sep 7 06:52:55 Development_techx sendmail[13637]: v876qt3c013636: to=<mohtashim@techx.com>, ctladdr=<root@techx.com> (0/0), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30635, dsn=2.0.0, stat=Sent
Like i said before the mail is received locally by mohtashim user which can be checked using the mail command but the issue remains. The message is not delivered to the zoho email client configured on my mobile.

Here is the entry for /etc/mail/access

Code:
Connect:techx.com                    RELAY
Connect:localhost                       RELAY
Connect:127.0.0.1                       RELAY
Connect:development_techx            RELAY
Connect:45.77.141.129                    RELAY
192.168.0.0/24                          RELAY

I am able to receive all other emails but not the ones triggered / send by the server.

Can you please suggest where the problem lies ?
Last edited by mohtashims; 09-07-2017 at 04:13 AM..
 

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