XF 1.5 Email to XXXX@XXXX.com failed: Unable to send mail.

[Michael Murguia]

From time to time, I get these errors logged, but not always. Any idea what this could be?

Here is additional information:

Zend_Mail_Transport_Exception: Email to XXXXXX@gmail.com failed: Unable to send mail. - library/Zend/Mail/Transport/Sendmail.php:137
Generated By: Unknown Account, Tuesday at 8:01 PM
Stack Trace
#0 /home/overlan7/public_html/forums/library/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Sendmail->_sendMail()
#1 /home/overlan7/public_html/forums/library/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#2 /home/overlan7/public_html/forums/library/XenForo/Model/MailQueue.php(79): Zend_Mail->send(Object(Zend_Mail_Transport_Sendmail))
#3 /home/overlan7/public_html/forums/library/XenForo/Deferred/MailQueue.php(10): XenForo_Model_MailQueue->runMailQueue(7.962620973587)
#4 /home/overlan7/public_html/forums/library/XenForo/Model/Deferred.php(295): XenForo_Deferred_MailQueue->execute(Array, Array, 7.962620973587, '')
#5 /home/overlan7/public_html/forums/library/XenForo/Model/Deferred.php(429): XenForo_Model_Deferred->runDeferred(Array, 7.962620973587, '', false)
#6 /home/overlan7/public_html/forums/library/XenForo/Model/Deferred.php(374): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#7 /home/overlan7/public_html/forums/deferred.php(23): XenForo_Model_Deferred->run(false)
#8 {main}
Request State
array(3) {
  ["url"] => string(44) "http://overlandbound.com/forums/deferred.php"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(4) {
    ["_xfRequestUri"] => string(61) "/forums/index.php?threads/2015-toyota-tacoma-build.201/page-2"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["_xfResponseType"] => string(4) "json"
  }
}

 

[Paul B]

If it happens sporadically then it will likely be an issue at the server level.

The mail log may hold some clues.

 

[Michael Murguia]

Still getting these errors. Where would I get the mail log?

Thanks!

M

 

[Paul B]

It depends on the server but typically something like /var/log/maillog.

 

[Michael Murguia]

Thanks! I'll check.