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Full Discussion: DNS config preventing mail delivery
Special Forums IP Networking DNS config preventing mail delivery Post 302947503 by Skrynesaver on Thursday 18th of June 2015 10:20:56 AM
Old 06-18-2015
So your MTP (probably sendmail if you don't know which transfer program your using) cannot resolve the asdf.xx.yy domain.
Can you do the following
Code:
telnet asdf.xx.yy 25
ehlo
MAIL FROM:<fretagi@this.host>
RCPT TO:<abc.xyz@asdf.xx.yy>
DATA

This is a test mail, did I get it.
.
quit

If not, at what point does it fail?
 

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LEARN ABOUT DEBIAN

relaytest

relaytest(1)						      General Commands Manual						      relaytest(1)

NAME

       relaytest - attempt to use SMTP to relay to a DSBL-compliant host

SYNOPSIS

       relaytest [-v] <ip address[:port]>

DESCRIPTION

       relaytest  attempts  to	connect  to  the  specified <ip address> on the specified port (default is port 25) and uses a variety of tests to
       attempt to relay through the host.

       In the tests below, source.com is sender_domain from dsbl.conf(5) and sender is sender_user.

       Non-domain-specific tests:

	      MAIL FROM:<sender@source.com>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<sender@source.com>
	      RCPT TO:<"listme@dsbl.org">

	      MAIL FROM:<sender@source.com>
	      RCPT TO:listme@dsbl.org

	      MAIL FROM:<sender@source.com>
	      RCPT TO:<dsbl.org!listme>

	      MAIL FROM:<nobody>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<nobody>
	      RCPT TO:<"listme@dsbl.org">

	      MAIL FROM:<nobody>
	      RCPT TO:listme@dsbl.org

	      MAIL FROM:<nobody>
	      RCPT TO:<dsbl.org!listme>

	      MAIL FROM:<source.com!sender>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<source.com!sender>
	      RCPT TO:<"listme@dsbl.org">

	      MAIL FROM:<source.com!sender>
	      RCPT TO:listme@dsbl.org

	      MAIL FROM:<source.com!sender>
	      RCPT TO:<dsbl.org!listme>

	      MAIL FROM:<>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<>
	      RCPT TO:<"listme@dsbl.org">

	      MAIL FROM:<>
	      RCPT TO:listme@dsbl.org

	      MAIL FROM:<>
	      RCPT TO:<dsbl.org!listme>

       relaytest then builds a list of possible domains, including "[127.0.0.1]", "localhost", [<ip address>], and any other domains that  can	be
       derived from reverse DNS of the IP or the SMTP greeting.

       Domain specific tests:

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<"listme@dsbl.org">

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:listme@dsbl.org

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<listme%dsbl.org@DOMAIN>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<listme%dsbl.org>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<"listme%dsbl.org">

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<listme@dsbl.org@DOMAIN>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<"listme@dsbl.org"@DOMAIN>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<@DOMAIN:listme@dsbl.org>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<dsbl.org!listme>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<dsbl.org!listme@DOMAIN>

	      MAIL FROM:<DOMAIN!nobody>
	      RCPT TO:<dsbl.org!listme>

	      MAIL FROM:<DOMAIN!nobody>
	      RCPT TO:<dsbl.org!listme@DOMAIN>

	      MAIL FROM:<nobody@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<postmaster@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<administrator@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<sales@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<info@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<webmaster@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

	      MAIL FROM:<listserv@DOMAIN>
	      RCPT TO:<listme@dsbl.org>

       relaytest then tries a variety of SMTP AUTH methods to try to relay a message through the target server.

       The envelopes used for these tests are always:

	      MAIL FROM:<sender@source.com>
	      RCPT TO:<listme@dsbl.org>

       The SMTP AUTH methods tried are as follows:

	      AUTH LOGIN, user=/webmaster, password=(null)
	      AUTH LOGIN, user=admin, password=admin
	      AUTH LOGIN, user=administrator, password=(null)
	      AUTH LOGIN, user=test, password=test
	      AUTH NTLM (anonymous)

OPTIONS

       -v     Verbose mode. Details of the SMTP transaction are written to standard output.

AUTHOR

       Ian Gulliver <ian@penguinhosting.net>

SEE ALSO

       dsbl.conf(5), spamtrap(1)

								    2002-04-03							      relaytest(1)
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