[Non-DoD Source] Sendmail Issue

[Zama Ques]

Thanks Clift  .
Please find MTA value in submit.cf
-bash-4.1$ grep -i mta /etc/mail/submit.cf
#D{sendmailMTACluster}$m
D{MTAHost}[127.0.0.1]

ThanksZaman 

    On Thursday, 1 September 2016 3:55 PM, "Clift, Tom CIV NSWCDD, A24" <robert.clift at navy.mil> wrote:
 

 Check the MTA in the submit.cf and let us know what it is set to.



Tom Clift

540-653-8023

DSN  249-8023

________________________________
From: redhat-sysadmin-list-bounces at redhat.com [redhat-sysadmin-list-bounces at redhat.com] on behalf of Zama Ques [queszama at yahoo.in]
Sent: Thursday, September 01, 2016 12:35 AM
To: redhat-sysadmin-list at redhat.com
Subject: [Non-DoD Source] Sendmail Issue

Need some clarification on Mail Settings. We are managing around hundreds of applications. These applications runs on Linux based hosts and used to send mails to users based on user registration at site and other actions.
We have Sendmail configured on these Linux servers to relay mails to destination mailbox. The following setting is being used in sendmail.cf to forward mails to relay mail server.

        DSesmtp:xmail.example.com


This is fine for me. But on some servers , I can see only sendmail is running but the above settings is not enabled. But still mails are going through this server. I tried to send mails to Yahoo and GMAIL accounts and mails are successfully getting delivered.

  Aug 31 03:36:12 vmprod sendmail[23396]: u7V7aCMr023396: from=<admin at vmprod.wiley.com>, size=534, class=0, nrcpts=1, msgid=<201608310736.u7V7aCee023393 at vmprod.wiley.com>, proto=ESMTP, daemon=MTA, *relay=localhost [127.0.0.1]*
  Aug 31 03:36:12 vmprod sendmail[23393]: u7V7aCee023393: to=queszama at yahoo.in, ctladdr=admin (35014/10), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30220, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (u7V7aCMr023396 Message accepted for delivery)
  Aug 31 03:36:13 vmprod sendmail[23398]: STARTTLS=client, relay=mx-apac.mail.gm0.yahoodns.net., version=TLSv1/SSLv3, verify=FAIL, cipher=RC4-SHA, bits=128/128
  Aug 31 03:36:16 vmprod sendmail[23398]: u7V7aCMr023396: to=<queszama at yahoo.in>, ctladdr=<admin at vmprod.wiley.com> (35014/10), delay=00:00:04, xdelay=00:00:04, mailer=esmtp, pri=120534, *relay=mx-apac.mail.gm0.yahoodns.net*. [106.10.166.52], dsn=2.0.0, stat=Sent (ok dirdel)


No Postfix,Exim running on this host

  -bash-4.1$ ps -ef | grep postifx
  essadmin  8974 20942  0 06:20 pts/4    00:00:00 grep postifx
  -bash-4.1$ ps -ef | grep exim
  essadmin  8982 20942  0 06:20 pts/4    00:00:00 grep exim


/etc/resolv.conf is pointing to a valid DNS server .

  $ cat /etc/redhat-release
  Red Hat Enterprise Linux Server release 6.3 (Santiago)


I am confused how mails are getting delivered since SMARTHOST is not configured . Any pointers ?

   
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