Not a bug Automated bounced and unsubscribe email handler errors - authorization problems (cross post from community forums)


Affected version
Crossposting so I can get some official eyeballs on this:

I have set up a new XenForo forums, and have set up outbound SMTP through my email system that I control.

I am now trying top set up the Automated bounced and unsubscribe email handlers, and and am getting Auth errors. I have tried IMAP TLS, IMAP (non encrypted) as well as POP3 non-encrypted and all of them are giving me authentication errors.

I know that my email server works, and I have successfully tested the accounts using macOS (so I know I set the password correctly and IMAP is working fine).

Is there any extra debugging we can set on the client side (XenForo) to see a bit more about what is going on? On my server side, I get simple errors pointing to authentication:

Examples (redacted IPs and domain), one with pop3 and one with IMAP:

Jun 1 23:55:30 b6dbdf4fde68 dovecot: imap-login: Aborted login (auth failed, 1 attempts in 0 secs): user=<>,, lip=yyy.yyy.yyy.yyy
Jun 2 06:57:54 b6dbdf4fde68 dovecot: pop3-login: Aborted login (auth failed, 1 attempts in 0 secs): user=<>,, lip=yyy.yyy.yyy.yyy
Here is what is showing up in the XenForo logs in the WebUI:

Server error log

Laminas\Mail\Protocol\Exception\RuntimeException: Bounce connection error: last request failed src/vendor/laminas/laminas-mail/src/Protocol/Pop3.php:167
Generated by: Unknown account Jun 2, 2021 at 11:23 AM

Stack trace

#0 src/vendor/laminas/laminas-mail/src/Protocol/Pop3.php(197): Laminas\Mail\Protocol\Pop3->readResponse(false)
#1 src/vendor/laminas/laminas-mail/src/Protocol/Pop3.php(248): Laminas\Mail\Protocol\Pop3->request('USER bouncebot@...')
#2 src/XF/Mail/Storage/Pop3.php(27): Laminas\Mail\Protocol\Pop3->login('bouncebot@f150l...', '*****', true)
#3 src/XF/EmailBounce/Processor.php(252): XF\Mail\Storage\Pop3::setupFromHandler(Array)
#4 src/XF/SubContainer/Bounce.php(15): XF\EmailBounce\Processor::getDefaultBounceHandlerStorage(Object(XF\Cli\App))
#5 src/XF/Container.php(28): XF\SubContainer\Bounce->XF\SubContainer\{closure}(Object(XF\Container))
#6 src/XF/SubContainer/Bounce.php(43): XF\Container->offsetGet('storage')
#7 src/XF/Job/EmailBounce.php(20): XF\SubContainer\Bounce->storage()
#8 src/XF/Job/Manager.php(258): XF\Job\EmailBounce->run(8)
#9 src/XF/Job/Manager.php(200): XF\Job\Manager->runJobInternal(Array, 8)
#10 src/XF/Job/Manager.php(84): XF\Job\Manager->runJobEntry(Array, 8)
#11 src/XF/Cli/Command/RunJobs.php(59): XF\Job\Manager->runQueue(false, 8)
#12 src/vendor/symfony/console/Command/Command.php(255): XF\Cli\Command\RunJobs->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#13 src/vendor/symfony/console/Application.php(992): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#14 src/vendor/symfony/console/Application.php(255): Symfony\Component\Console\Application->doRunCommand(Object(XF\Cli\Command\RunJobs), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#15 src/vendor/symfony/console/Application.php(148): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#16 src/XF/Cli/Runner.php(109): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#17 cmd.php(15): XF\Cli\Runner->run()
#18 {main}

Request state

array(1) {
["cli"] => string(33) "/var/www/html/cmd.php xf:run-jobs"
As you already have a thread about this, a bug report probably isn't necessary. At first glance, this is unlikely to be a bug and is more likely to be a configuration issue.

If you require an official response, the best avenue to do that is to submit a ticket but given what I've noted about the likely culprit, we're unlikely to be able to provide support for specific server configuration issues.
Thanks for the quick response. I just didn't know if a Troubleshooting forum issue got official eyes on this. I'm new to XenForo (despite having signed up for the beta over 10 years ago!), and I'll open a ticket.
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