Zend_Mail_Protocol_Exception: Message rejected: Address blacklisted

[Coop1979]

I've been seeing the above error in the Server Error Log and can't figure out what is causing it. Here is the complete error:

Zend_Mail_Protocol_Exception: Message rejected: Address blacklisted. - library/Zend/Mail/Protocol/Abstract.php:431
Generated By: user123, Jun 8, 2012
Stack Trace
#0 /Sites/mysite/library/Zend/Mail/Protocol/Smtp.php(324): Zend_Mail_Protocol_Abstract->_expect(250, 600)
#1 /Sites/mysite/library/Zend/Mail/Transport/Smtp.php(215): Zend_Mail_Protocol_Smtp->data('Subject: New Th...')
#2 /Sites/mysite/library/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Smtp->_sendMail()
#3 /Sites/mysite/library/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#4 /Sites/mysite/library/XenForo/Mail.php(170): Zend_Mail->send()
#5 /Sites/mysite/library/XenForo/Mail.php(145): XenForo_Mail->sendMail(Object(Zend_Mail))
#6 /Sites/mysite/library/XenForo/Mail.php(197): XenForo_Mail->send('treehuggergeorg...', 'treehuggergeorg...', Array, '', '', '')
#7 /Sites/mysite/library/ForumWatch/Model/ForumWatch.php(137): XenForo_Mail->queue('treehuggergeorg...', 'treehuggergeorg...')
#8 /Sites/mysite/library/ForumWatch/Extend/DataWriter/Discussion/Thread.php(10): ForumWatch_Model_ForumWatch->sendNotificationToWatchUsersOnNewThread(Array, Array, Array)
#9 /Sites/mysite/library/WidgetFramework/Extend/DataWriter/Discussion/Thread.php(4): ForumWatch_Extend_DataWriter_Discussion_Thread->_postSaveAfterTransaction()
#10 /Sites/mysite/library/XenForo/DataWriter.php(1399): WidgetFramework_Extend_DataWriter_Discussion_Thread->_postSaveAfterTransaction()
#11 /Sites/mysite/library/xenCODE/Socialize/DataWriter/Threads.php(6): XenForo_DataWriter->save()
#12 /Sites/mysite/library/XenForo/ControllerPublic/Forum.php(490): xenCODE_Socialize_DataWriter_Threads->save()
#13 /Sites/mysite/library/XenForo/FrontController.php(310): XenForo_ControllerPublic_Forum->actionAddThread()
#14 /Sites/mysite/library/XenForo/FrontController.php(132): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#15 /Sites/mysite/index.php(13): XenForo_FrontController->run()
#16 {main}

I don't even know what the error means: Is the user's email blacklisted, is my email blacklisted, have I banned someone who is setup to receive an email notification and so the email is blacklisted? Thoughts?

 

[Andy.N]

Are you using Amazon SES?
That means those email addresses are invalid (users sign up with random email address) and the email bounces.
If this is a notification email (watch feature) to existing member, it means this member has an outdated/nonworking email address.

 

[Coop1979]

Ahhh. Thanks, Andy!

I am using Amazon SES, so that is definitely what the error is all about. Thanks so much for your quick reply.

 

[TheBigK]

Can someone confirm this? I've been receiving similar errors.

Others are -
Zend_Mail_Protocol_Exception: Message rejected: Email address is not verified.

Zend_Mail_Protocol_Exception: No connection has been established

Zend_Mail_Protocol_Exception: Message rejected: Address blacklisted

Zend_Mail_Protocol_Exception: Could not open socket

 

[Jake Bunce]

The connection and socket error simply mean that XF was unable to connect to the mail server. Make sure your mail settings are correct:

Admin CP -> Home -> Options -> Email Options -> Email Transport Method

The other two indicate that the receiver rejected the email. There isn't much you can do about that.