Was able to connect to SMTP but failed while trying to send an email

Replies: 1

ERROR IN THE DELIVERY OF THE EMAIL: The WP Mail SMTP plugin registered this error the last time you tried to send an email:

Mailer: Other SMTP
PHPMailer was able to connect to SMTP server but failed while trying to send an email.
Consider running an email test after solving it.

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The email test gets sent and delivered but I keep getting this error and WooCommerce emails are not getting delivered.

Anyone willing to help?

Thanks