Critical error following Email Test

HI @jamesradcliffe,

Thanks for reaching out. When you get a chance, could you please setup error logs and share the errors with us? This usually happens due to some plugins or themes not being compatible with WordPress 5.5 which has major changes regarding emails. Please check if you have any updates for all of your plugins/theme and update them.

Thanks!

Hi Sanjeev,

Sorry for the delay in getting back to you. I’ve setup error logs on my site but for whatever reason this hasn’t made any difference and no debug.log file is being generated. I’ll look further into this if its required for support but in the meantime I’ve received the following error:

EMAIL DELIVERY ERROR: the plugin WP Mail SMTP v2.5.1 logged this error during the last time it tried to send an email:

Mailer: Other SMTP
SMTP Error: Could not connect to SMTP host.
Consider running an email test after fixing it.

As I mentioned, I’m using the exact same settings and logins for other email clients and I have no issues though.

Thanks

Hi @jamesradcliffe,

Thanks for the details. If you’re getting a critical error, the errors should be logged. The email delivery error indicates that the last email sent from your site failed because the plugin could not connect to the SMTP host you’ve specified. If you’re not getting critical error after sending a test email, please share a full error log recorded when you send a test email. Here’s a screenshot for the option to get a full error log. This will give us an idea of what might be going on.

Thanks!

Hi Sanjeev,

I can’t seem to find this log anywhere – is it because I’m not a Pro user?

Hi @jamesradcliffe,

The SMTP error log is available with a lite version as well. Here’s a screenshot for the option to get a full error log. You’ll only able to see this if email delivery fails due to some error.

If you’re getting a critical error, you’ll need to look into your site’s debug log. WordPress also sends you an automatic email notification with an error log whenever you get a critical error on your site.

Thanks!

Morning Sanjeev,

I’ve managed to produce the following error log:
“[05-Jan-2021 10:05:55 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/lib/Doctrine/Driver/PDOConnection.php:85
Stack trace:
#0 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/lib/Doctrine/Driver/PDOConnection.php(85): PDO->query(‘SELECT w0_.name…’)
#1 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(2): MailPoet\Doctrine\Driver\PDOConnection->query(‘SELECT w0_.name…’)
#2 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Query/Exec/SingleSelectExecutor.php(2): MailPoetVendor\Doctrine\DBAL\Connection->executeQuery(‘SELECT w0_.name…’, Array, Array, NULL)
#3 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Query.php(2): MailPoetVendor\Doctrine\ORM\Query\Exec\SingleSelectExecutor->execute(Object(MailPoet\Doctrine\SerializableConnection), A in /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 2
[05-Jan-2021 10:12:24 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/lib/Doctrine/Driver/PDOConnection.php:85
Stack trace:
#0 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/lib/Doctrine/Driver/PDOConnection.php(85): PDO->query(‘SELECT w0_.name…’)
#1 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(2): MailPoet\Doctrine\Driver\PDOConnection->query(‘SELECT w0_.name…’)
#2 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Query/Exec/SingleSelectExecutor.php(2): MailPoetVendor\Doctrine\DBAL\Connection->executeQuery(‘SELECT w0_.name…’, Array, Array, NULL)
#3 /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/orm/lib/Doctrine/ORM/Query.php(2): MailPoetVendor\Doctrine\ORM\Query\Exec\SingleSelectExecutor->execute(Object(MailPoet\Doctrine\SerializableConnection), A in /home/pj6hocmzwqty/public_html/wp-content/plugins/mailpoet/vendor-prefixed/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 2”

I hope that this helps

Hi @jamesradcliffe,

Thanks for the details. It looks like you’re using the Mailpoet plugin. Mailpoet tends to send emails in its own way and does not use default WordPress wp_mail() to send emails. You might want to deactivate the Mailpoet plugin or consult with their support regarding the issue.

I hope this helps!