Third party blacklist relays.ordb.org stops all mailflow when enabled

Article:TECH89236  |  Created: 2008-01-26  |  Updated: 2013-10-22  |  Article URL http://www.symantec.com/docs/TECH89236
Article Type
Technical Solution

Product(s)

Issue



Mailflow has stopped since March 26th 2008.

Symptoms
Third party blacklists are enabled, and relays.ordb.org is present in the list. Any message sent to a domain protected by Symantec AntiSpam products gets a 550 5.2.1 or 554 response.


The messages look like:
 

    "550 5.2.1 Mail from x.x.x.x refused: spam site."
 
Or,
 
    "Your message did not reach some or all of the intended recipients.
             
    Subject:     RE: test
    Sent:        26/03/2008 10:56
     
    The following recipient(s) cannot be reached:
     
    administrator@domain.ext on 26/03/2008 10:58

    The message reached the recipient's e-mail system, but delivery was refused.  Attempt to resend the message.  If it still fails, contact your system administrator.

    < mailserver.domain.ext #5.2.1 SMTP; 550 5.2.1 Mail from x.x.x.x refused: spam site.>"



Cause



This blacklist is no longer in use. It went out of service in December 2006.

Solution



Remove relays.ordb.org from your list of 3rd party blacklists.



Technical Information
ORDB.org Going Offline: http://it.slashdot.org/article.pl?sid=06/12/18/154259&tid=230

Long-Dead ORDB Begins Returning False Positives: http://it.slashdot.org/article.pl?no_d2=1&sid=08/03/25/2124224



Legacy ID



2008032614404554


Article URL http://www.symantec.com/docs/TECH89236


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