After upgrade from 1.x, emails sent using the old mailsystem

You said "remove 1.6 and upgrade entirely to 2.xbeta4". If you remove 1.6 first then it's not an upgrade but a fresh install😃.

I cannot reproduce this. I guess there must be something unusual on your site that causes the problem.

I have the same problem!

Message Symfony\Component\Mailer\Exception\TransportException: Connection to "process /usr/sbin/sendmail -bs" has been closed unexpectedly. in Symfony\Component\Mailer\Transport\Smtp\Stream\AbstractStream->readLine() (linea 87 di /opt/drupal/vendor/symfony/mailer/Transport/Smtp/Stream/AbstractStream.php).

Here the stack traces:

#0 /opt/drupal/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(335): Symfony\Component\Mailer\Transport\Smtp\Stream\AbstractStream->readLine()
#1 /opt/drupal/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(265): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->getFullResponse()
#2 /opt/drupal/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(199): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->start()
#3 /opt/drupal/vendor/symfony/mailer/Transport/AbstractTransport.php(69): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->doSend(Object(Symfony\Component\Mailer\SentMessage))
#4 /opt/drupal/vendor/symfony/mailer/Transport/Smtp/SmtpTransport.php(137): Symfony\Component\Mailer\Transport\AbstractTransport->send(Object(Symfony\Component\Mime\Email), Object(Symfony\Component\Mailer\DelayedEnvelope))
#5 /opt/drupal/vendor/symfony/mailer/Transport/SendmailTransport.php(75): Symfony\Component\Mailer\Transport\Smtp\SmtpTransport->send(Object(Symfony\Component\Mime\Email), NULL)
#6 /opt/drupal/vendor/symfony/mailer/Mailer.php(42): Symfony\Component\Mailer\Transport\SendmailTransport->send(Object(Symfony\Component\Mime\Email), NULL)
#7 /opt/drupal/web/core/lib/Drupal/Core/Mail/Plugin/Mail/SymfonyMailer.php(142): Symfony\Component\Mailer\Mailer->send(Object(Symfony\Component\Mime\Email))
#8 /opt/drupal/web/modules/contrib/mailsystem/src/Adapter.php(50): Drupal\Core\Mail\Plugin\Mail\SymfonyMailer->mail(Array)
#9 /opt/drupal/web/core/lib/Drupal/Core/Mail/MailManager.php(308): Drupal\mailsystem\Adapter->mail(Array)
#10 /opt/drupal/web/core/lib/Drupal/Core/Mail/MailManager.php(181): Drupal\Core\Mail\MailManager->doMail('webform', 'chiedi_all_espe...', 'info@lirh.it', 'it', Array, 'noreply@lirh.it', true)
#11 /opt/drupal/web/core/lib/Drupal/Core/Render/Renderer.php(637): Drupal\Core\Mail\MailManager->{closure:Drupal\Core\Mail\MailManager::mail():180}()
#12 /opt/drupal/web/core/lib/Drupal/Core/Mail/MailManager.php(180): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#13 /opt/drupal/web/modules/contrib/mailsystem/src/MailsystemManager.php(70): Drupal\Core\Mail\MailManager->mail('webform', 'chiedi_all_espe...', 'info@lirh.it', 'it', Array, 'noreply@lirh.it', true)
#14 /opt/drupal/web/modules/contrib/webform/src/Plugin/WebformHandler/EmailWebformHandler.php(1238): Drupal\mailsystem\MailsystemManager->mail('webform', 'chiedi_all_espe...', 'info@lirh.it', 'it', Array, 'noreply@lirh.it')
#15 /opt/drupal/web/modules/contrib/webform/src/Plugin/WebformHandler/EmailWebformHandler.php(887): Drupal\webform\Plugin\WebformHandler\EmailWebformHandler->sendMessage(Object(Drupal\webform\Entity\WebformSubmission), Array)
#16 /opt/drupal/web/modules/contrib/webform/src/Entity/Webform.php(2751): Drupal\webform\Plugin\WebformHandler\EmailWebformHandler->postSave(Object(Drupal\webform\Entity\WebformSubmission), false, NULL)
#17 /opt/drupal/web/modules/contrib/webform/src/WebformSubmissionStorage.php(1235): Drupal\webform\Entity\Webform->invokeHandlers('postSave', Object(Drupal\webform\Entity\WebformSubmission), false, NULL)
#18 /opt/drupal/web/modules/contrib/webform/src/WebformSubmissionStorage.php(1140): Drupal\webform\WebformSubmissionStorage->invokeWebformHandlers('postSave', Object(Drupal\webform\Entity\WebformSubmission), false)
#19 /opt/drupal/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(489): Drupal\webform\WebformSubmissionStorage->doPostSave(Object(Drupal\webform\Entity\WebformSubmission), false)
#20 /opt/drupal/web/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php(806): Drupal\Core\Entity\EntityStorageBase->save(Object(Drupal\webform\Entity\WebformSubmission))
#21 /opt/drupal/web/modules/contrib/webform/src/WebformSubmissionStorage.php(1003): Drupal\Core\Entity\Sql\SqlContentEntityStorage->save(Object(Drupal\webform\Entity\WebformSubmission))
#22 /opt/drupal/web/core/lib/Drupal/Core/Entity/EntityBase.php(354): Drupal\webform\WebformSubmissionStorage->save(Object(Drupal\webform\Entity\WebformSubmission))
#23 /opt/drupal/web/modules/contrib/webform/src/Entity/WebformSubmission.php(920): Drupal\Core\Entity\EntityBase->save()
#24 /opt/drupal/web/modules/contrib/webform/src/WebformSubmissionForm.php(2052): Drupal\webform\Entity\WebformSubmission->save()
#25 [internal function]: Drupal\webform\WebformSubmissionForm->save(Array, Object(Drupal\Core\Form\FormState))
#26 /opt/drupal/web/core/lib/Drupal/Core/Form/FormSubmitter.php(129): call_user_func_array(Array, Array)
#27 /opt/drupal/web/core/lib/Drupal/Core/Form/FormSubmitter.php(67): Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object(Drupal\Core\Form\FormState))
#28 /opt/drupal/web/core/lib/Drupal/Core/Form/FormBuilder.php(597): Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object(Drupal\Core\Form\FormState))
#29 /opt/drupal/web/core/lib/Drupal/Core/Form/FormBuilder.php(326): Drupal\Core\Form\FormBuilder->processForm('webform_submiss...', Array, Object(Drupal\Core\Form\FormState))
#30 /opt/drupal/web/core/lib/Drupal/Core/Entity/EntityFormBuilder.php(48): Drupal\Core\Form\FormBuilder->buildForm(Object(Drupal\webform\WebformSubmissionForm), Object(Drupal\Core\Form\FormState))
#31 /opt/drupal/web/modules/contrib/webform/src/Entity/Webform.php(1243): Drupal\Core\Entity\EntityFormBuilder->getForm(Object(Drupal\webform\Entity\WebformSubmission), 'test')
#32 /opt/drupal/web/modules/contrib/webform/src/Controller/WebformTestController.php(128): Drupal\webform\Entity\Webform->getSubmissionForm(Array, 'test')
#33 [internal function]: Drupal\webform\Controller\WebformTestController->testForm(Object(Symfony\Component\HttpFoundation\Request))
#34 /opt/drupal/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array)
#35 /opt/drupal/web/core/lib/Drupal/Core/Render/Renderer.php(637): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::wrapControllerExecutionInRenderContext():121}()
#36 /opt/drupal/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(121): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#37 /opt/drupal/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array)
#38 /opt/drupal/vendor/symfony/http-kernel/HttpKernel.php(181): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::onController():96}()
#39 /opt/drupal/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#40 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/Session.php(53): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#41 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#42 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#43 /opt/drupal/web/core/modules/big_pipe/src/StackMiddleware/ContentLength.php(32): Drupal\Core\StackMiddleware\ContentLength->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#44 /opt/drupal/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(116): Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#45 /opt/drupal/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(90): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#46 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#47 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#48 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(36): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#49 /opt/drupal/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(51): Drupal\Core\StackMiddleware\AjaxPageState->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#50 /opt/drupal/web/core/lib/Drupal/Core/DrupalKernel.php(741): Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#51 /opt/drupal/web/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#52 {main}

we are also experiencing the same issue. With Mailsystem & symfony_mailer configured as the handlers.

Experienced the same issue (Webform mails not working after upgrading to 2.x). Noticed that enabling the submodule "Mailer override" (mailer_override) fixed the issue for me.

I also had this issue, and as gillesv noted, you can fix it by enabling the mailer_override module.

When you run the update scripts from 1.x to 2.x, mailer_override is not enabled. However, mailer_override is necessary to override core's standard mail handling in 2.x (in 1.x, I'm pretty sure this is just the default). So since the default changes, everyone who was relying on the previous override behavior will no longer get email sent through this module (instead via core's default, which is sendmail) until they enable the mailer_override module.

I'm not sure whether the fix should be enabling the mailer_override module by default or just documenting this better, so I'm setting this to "Needs work", but it's definitely a reproducible issue.

OK now with #7 I start to understand this issue. It would be great if anyone else posting earlier on the issue could confirm that the enabling mailer_override fixes the issue.

symfony_mailer_update_20002() enabled the mailer_override module, but only if at least one override is enabled. This is not correct as pointed out in #7. The mailer_override module not only is for overriding (optionally replacing another modules mail code with an improved version using the new HTML interfaces of this module), but also for replacing (capturing all emails sent by the old interface, and sending them using symfony mailer).

So we can fix it by removing the if (array_filter($override, fn($x) => $x != 3)) { in that update hook. This won't help any sites that already have upgraded - however I believe there is nothing we can do in that case. We cannot distinguish the case where a site has deliberately chosen to run without replacing the old mail system, so disabled mailer_override module.

There may also be some fresh 2.x installs that forgot to install mailer_override, however in that case they likely didn't read the documentation which explicitly covers this.

Would be great if anyone could test

The phpstan warning in the MR pipeline is also present on 2.x so we can ignore it here.