Unable To Received Mail For My Xenforo Watch Thread

[jaden]

Please Guys, I need you help cause my Xen Foro doesn't send email for watched thread
and I received server error in the log
"Unable to send mail. - library/Zend/Mail/Transport/Sendmail.php:137"

And here is the line of the error code

#0 /home/loyauclq/public_html/library/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Sendmail->_sendMail()
#1 /home/loyauclq/public_html/library/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#2 /home/loyauclq/public_html/library/XenForo/Model/MailQueue.php(79): Zend_Mail->send(Object(Zend_Mail_Transport_Sendmail))
#3 /home/loyauclq/public_html/library/XenForo/Deferred/MailQueue.php(10): XenForo_Model_MailQueue->runMailQueue(7.9999990463257)
#4 /home/loyauclq/public_html/library/XenForo/Model/Deferred.php(295): XenForo_Deferred_MailQueue->execute(Array, Array, 7.9999990463257, '')
#5 /home/loyauclq/public_html/library/XenForo/Model/Deferred.php(429): XenForo_Model_Deferred->runDeferred(Array, 7.9999990463257, '', false)
#6 /home/loyauclq/public_html/library/XenForo/Model/Deferred.php(374): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#7 /home/loyauclq/public_html/deferred.php(23): XenForo_Model_Deferred->run(false)
#8 {main}

 

[AnimeHaxor]

What are you running shared server or vps, dedicated?

What your host?

What are your running PHP?

You have correct in SMTP options?

What is your XenForo version?