XF 1.5 Too much Mail Server Error

[Freelancer]

XF 1.5.6
PHP 5.6.2

First time I wanted to send out a mass eMail to my users (approx. 350) and got the following Server Errors with it seems all users (20+ Error pages).

But eMails were received it seems. Test Mails worked and as I have some eMail addresses in the list I also received the eMail with several of my accounts despite the Error.

Email Bounce Log shows only 1 eMail not delivered.

Server Error Log
Error Info
Zend_Mail_Protocol_Exception: Email to xxxxxxxx@xxxxxx.xx failed: 4.7.1 Error: too much mail from 1xx.x.1xx.xx - library/Zend/Mail/Protocol/Abstract.php:431
Generated By: xxxxxxxxxxxxx, 48 minutes ago
Stack Trace
#0 /var/www/clients/client180/web812/web/library/Zend/Mail/Protocol/Smtp.php(261): Zend_Mail_Protocol_Abstract->_expect(250, 300)
#1 /var/www/clients/client180/web812/web/library/Zend/Mail/Transport/Smtp.php(224): Zend_Mail_Protocol_Smtp->mail('admin+2f3d8ac2+...')
#2 /var/www/clients/client180/web812/web/library/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Smtp->_sendMail()
#3 /var/www/clients/client180/web812/web/library/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#4 /var/www/clients/client180/web812/web/library/XenForo/Deferred/UserEmail.php(168): Zend_Mail->send(Object(Zend_Mail_Transport_Smtp))
#5 /var/www/clients/client180/web812/web/library/XenForo/Deferred/UserEmail.php(62): XenForo_Deferred_UserEmail->_sendEmail(Array, Array, Object(Zend_Mail_Transport_Smtp))
#6 /var/www/clients/client180/web812/web/library/XenForo/Model/Deferred.php(295): XenForo_Deferred_UserEmail->execute(Array, Array, 7.9999990463257, '')
#7 /var/www/clients/client180/web812/web/library/XenForo/Model/Deferred.php(429): XenForo_Model_Deferred->runDeferred(Array, 7.9999990463257, '', false)
#8 /var/www/clients/client180/web812/web/library/XenForo/Model/Deferred.php(374): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#9 /var/www/clients/client180/web812/web/library/XenForo/ControllerAdmin/Tools.php(159): XenForo_Model_Deferred->run(true, NULL, '', false)
#10 /var/www/clients/client180/web812/web/library/XenForo/FrontController.php(351): XenForo_ControllerAdmin_Tools->actionRunDeferred()
#11 /var/www/clients/client180/web812/web/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#12 /var/www/clients/client180/web812/web/admin.php(13): XenForo_FrontController->run()
#13 {main}
Request State
array(3) {
  ["url"] => string(60) "https://www.xxxxxxxxxxxxxx.com/admin.php?tools/run-deferred"
  ["_GET"] => array(1) {
    ["tools/run-deferred"] => string(0) ""
  }
  ["_POST"] => array(3) {
    ["redirect"] => string(62) "https://www.xxxxxxxxxxxxxxx.com/admin.php?users/email&sent=356"
    ["execute"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
  }
}

 

[Mike]

This is a limitation with your SMTP server: they're rate limiting you, probably fairly heavily it seems. If this is an SMTP server you control, see the references here: http://postfix.1071664.n5.nabble.co...r-too-much-mail-from-xx-xx-xx-xx-td60805.html If not, you may need to contact them to see if they'l reduce restrictions. If they won't, you may need to consider a different mail sending service.

 

[Freelancer]

I have no control unfortunately... I will contact them. Thank you for the fast reply.