XF 1.2 Zend_Mail_Transport_Exception


Active member
Hi folks, i seem to be getting errors in the server logs all similar to below.

I am however still getting email alerts from conversations, and users have been signing up following the email confirmation links.

Can anyone throw some pointers on where i could look to troubleshoot this?


Zend_Mail_Transport_Exception: Unable to send mail. - library/Zend/Mail/Transport/Sendmail.php:137
Generated By: Unknown Account, Today at 6:03 PM
Stack Trace
#0 *******/public_html/library/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Sendmail->_sendMail()
#1 *******/public_html/library/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#2 *******/public_html/library/XenForo/Model/MailQueue.php(58): Zend_Mail->send(Object(Zend_Mail_Transport_Sendmail))
#3 *******/public_html/library/XenForo/Deferred/MailQueue.php(10): XenForo_Model_MailQueue->runMailQueue(9.94580698013)
#4 *******/public_html/library/XenForo/Model/Deferred.php(190): XenForo_Deferred_MailQueue->execute(Array, Array, 9.94580698013, '')
#5 *******/public_html/library/XenForo/Model/Deferred.php(313): XenForo_Model_Deferred->runDeferred(Array, 9.94580698013, '', false)
#6 *******/public_html/library/XenForo/Model/Deferred.php(266): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#7 *******/public_html/deferred.php(15): XenForo_Model_Deferred->run(false)
#8 {main}
Request State
array(3) {
  ["url"] => string(32) "http://mineplay.com/deferred.php"
  ["_GET"] => array(0) {
  ["_POST"] => array(4) {
    ["_xfRequestUri"] => string(19) "/members/maginka.1/"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["_xfResponseType"] => string(4) "json"


XenForo developer
Staff member
What version are you running specifically? If you're not running the latest beta, make sure you upgrade.

Otherwise, this is really just a generic mail error. Your server mail log may have more details.


Active member
Hi Mike, Im using the lates beta, 1.2.0 Beta 3

I will investigate further, and thanks for the reply. It doesnt appear to be affecting anything, so all is good ;)