XF 1.5 Error: cannot login, user or password wrong

[NinaMcI]

Hi,
I have been getting a lot of error logs with the following exception:

Zend_Mail_Storage_Exception: cannot login, user or password wrong - library/Zend/Mail/Storage/Imap.php:279
Generated By: Unknown Account,

Stack Trace:

#0 /var/www/vhosts/mooclab.club/httpdocs/library/XenForo/Model/EmailBounce.php(292): Zend_Mail_Storage_Imap->__construct(Array)
#1 /var/www/vhosts/mooclab.club/httpdocs/library/XenForo/Deferred/EmailBounce.php(19): XenForo_Model_EmailBounce->openBounceHandlerConnection()
#2 /var/www/vhosts/mooclab.club/httpdocs/library/XenForo/Model/Deferred.php(295): XenForo_Deferred_EmailBounce->execute(Array, Array, 7.9999938011169, '')
#3 /var/www/vhosts/mooclab.club/httpdocs/library/XenForo/Model/Deferred.php(429): XenForo_Model_Deferred->runDeferred(Array, 7.9999938011169, '', false)
#4 /var/www/vhosts/mooclab.club/httpdocs/library/XenForo/Model/Deferred.php(374): XenForo_Model_Deferred->_runInternal(Array, NULL, '', false)
#5 /var/www/vhosts/mooclab.club/httpdocs/deferred.php(23): XenForo_Model_Deferred->run(false)
#6 {main}

Request state:

array(3) {
  ["url"] => string(37) "https://www.mooclab.club/deferred.php"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(3) {
   ["_xfRequestUri"] => string(23) "/find-new/2080518/posts"
   ["_xfNoRedirect"] => string(1) "1"
   ["_xfResponseType"] => string(4) "json"
  }
}

Does anyone know what the problem is likely to be?

Thanks

 

[Mike]

This would indicate that your IMAP details for bounce handling are incorrect.

 

[NinaMcI]

This would indicate that your IMAP details for bounce handling are incorrect.

Thanks for your reply.
I have checked the configuration and everything seems correct, but am still receiving the same error logs:


Here are my settings:


Any ideas why I'm still receiving errors?