XF 1.5 Failed parsing bounce email: Not a valid Mime Message: End Missing

[JK2447]

Hi All

Just wondered if anyone has had the below server error please

Failed parsing bounce email: Not a valid Mime Message: End Missing

Stack Trace #0 /var/www/vhosts/certforums.com/httpdocs/library/Zend/Mime/Decode.php(92): Zend_Mime_Decode::splitMime('This is a multi...', '_fXy79dvs_30939...')
#1 /var/www/vhosts/certforums.com/httpdocs/library/Zend/Mail/Part.php(222): Zend_Mime_Decode::splitMessageStruct('This is a multi...', '_fXy79dvs_30939...')
#2 /var/www/vhosts/certforums.com/httpdocs/library/Zend/Mail/Part.php(292): Zend_Mail_Part->_cacheContent()
#3 /var/www/vhosts/certforums.com/httpdocs/library/Zend/Mail/Part.php(517): Zend_Mail_Part->countParts()
#4 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/BounceParser.php(182): Zend_Mail_Part->rewind()
#5 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/BounceParser.php(170): XenForo_BounceParser->_process()
#6 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/Model/EmailBounce.php(13): XenForo_BounceParser->__construct(Object(Zend_Mail_Message), 'bounce@certforu...', 'd1af5a47c165684...')
#7 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/Deferred/EmailBounce.php(55): XenForo_Model_EmailBounce->processBounceEmail('Return-Path: <x...')
#8 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/Model/Deferred.php(295): XenForo_Deferred_EmailBounce->execute(Array, Array, 7.9999969005585, '')
#9 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/Model/Deferred.php(429): XenForo_Model_Deferred->runDeferred(Array, 7.9999969005585, '', false)
#10 /var/www/vhosts/certforums.com/httpdocs/library/XenForo/Model/Deferred.php(374): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#11 /var/www/vhosts/certforums.com/httpdocs/deferred.php(23): XenForo_Model_Deferred->run(false)
#12 {main}
Request State array(3) {
["url"] => string(39) "https://www.certforums.com/deferred.php"
["_GET"] => array(0) {
}
["_POST"] => array(3) {
["_xfRequestUri"] => string(40) "/threads/sql-server-explain-please.3146/"
["_xfNoRedirect"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}