That looks like it should work. You might want to try sending a message using
https://www.mail-tester.com/ and the XF "Test outbound email" tool.
Mail-tester showed a 10/10.
But I did get this error.
- Laminas\Mail\Protocol\Exception\RuntimeException: Bounce connection error: host doesn't allow connection
- src/vendor/laminas/laminas-mail/src/Protocol/Imap.php:101
Stack trace
#0 src/vendor/laminas/laminas-mail/src/Protocol/Imap.php(45): Laminas\Mail\Protocol\Imap->connect('email-smtp.us-e...', 587, 'tls')
#1 src/XF/Mail/Storage/Imap.php(28): Laminas\Mail\Protocol\Imap->__construct('email-smtp.us-e...', 587, 'TLS')
#2 src/XF/EmailBounce/Processor.php(256): XF\Mail\Storage\Imap::setupFromHandler(Array)
#3 src/XF/SubContainer/Bounce.php(15): XF\EmailBounce\Processor::getDefaultBounceHandlerStorage(Object(XF\Pub\App))
#4 src/XF/Container.php(31): XF\SubContainer\Bounce->XF\SubContainer\{closure}(Object(XF\Container))
#5 src/XF/SubContainer/Bounce.php(43): XF\Container->offsetGet('storage')
#6 src/XF/Job/EmailBounce.php(20): XF\SubContainer\Bounce->storage()
#7 src/XF/Job/Manager.php(260): XF\Job\EmailBounce->run(8)
#8 src/XF/Job/Manager.php(202): XF\Job\Manager->runJobInternal(Array, 8)
#9 src/XF/Job/Manager.php(86): XF\Job\Manager->runJobEntry(Array, 8)
#10 job.php(43): XF\Job\Manager->runQueue(false, 8)
#11 {main}
So I changed the bounce to my mail.site id for now