[ExchangeList] Re: Question on Error #550 5.7.1 Sender ID not permitted

You are rejecting their email based upon your configuration, in this case
because the HELO of the sending server does not meet the requirements of
your implementation. The DNS report you listed means nothing in this case,
since they are sending out through a different server from what they are
receiving on.

 

What you need to do is review the log or if the postmaster message includes
the sending (email) server HELO. This is what is wrong. 

 

John T

 

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Todd Lemmiksoo
Sent: Thursday, January 24, 2008 1:15 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: Question on Error #550 5.7.1 Sender ID not
permitted

 

mail going to my Exchange server, front ended by ISA 2006.

 

  _____  

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of John T (lists)
Sent: Thursday, January 24, 2008 3:52 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: Question on Error #550 5.7.1 Sender ID not
permitted

Email going out of your server or to your server?

 

John T

 

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Todd Lemmiksoo
Sent: Thursday, January 24, 2008 12:26 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Question on Error #550 5.7.1 Sender ID not permitted

 

One of our customers e-mails was returned to them with the above error
message. I e-mailed them a DNSstuff report with this error

WARNING: One or more of your mailservers is claiming to be a host other than
what it really is (the SMTP greeting should be a 3-digit code, followed by a
space or a dash, then the host name). If your mailserver sends out E-mail
using this domain in its EHLO or HELO, your E-mail might get blocked by
anti-spam software. This is also a technical violation of RFC821
<http://www.DNSstuff.com/pages/rfc821.htm>  4.3 (and RFC2821
<file:///\\tools\rfc.ch?detail=2821>  4.3.1). Note that the hostname given
in the SMTP greeting should have an A record pointing back to the same
server. Note that this one test may use a cached DNS record.

mariettacorp.com.s7a1.psmtp.com claims to be invalid hostname 'Postini': <br
/> 220 Postini ESMTP 224 y6_13_0c9 ready. CA Business and Professions Code
Section 17538.45 forbids use of this system for unsolicited electronic mail
advertisements. <br />mariettacorp.com.s7a2.psmtp.com claims to be invalid
hostname 'Postini': <br /> 220 Postini ESMTP 224 y6_13_0c9 ready. CA
Business and Professions Code Section 17538.45 forbids use of this system
for unsolicited electronic mail advertisements. <br
/>mariettacorp.com.s7b1.psmtp.com claims to be invalid hostname 'Postini':
<br /> 220 Postini ESMTP 224 y6_13_0c9 ready. CA Business and Professions
Code Section 17538.45 forbids use of this system for unsolicited electronic
mail advertisements. <br />mariettacorp.com.s7b2.psmtp.com claims to be
invalid hostname 'Postini': <br /> 220 Postini ESMTP 219 y6_13_0c9 ready. CA
Business and Professions Code Section 17538.45 forbi

They called me back to say that they do not use sender ID and that my
Exchange server is configured wrong. I am running Exchange 2003 SP2, IMF,
RBL and anti-spam software on the Exchange and ISA2006 servers.

Do I have something wrong in my configuration that caused the 550 5.7.1
error. 

Todd Lemmiksoo 
Network Administrator 

All-Mode Communications, Inc. 
1725 Dryden Road 
Freeville, New York  13068 
(607) 347-4164 x440 
1-877-ALLMODE  (toll free) 
 <http://www.all-mode.com> http://www.all-mode.com

Other related posts: