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Troubleshooting Email

Emails from the system are not being received.​

Check the SMTP server settings have been correctly configured for your domain, and that the from and to addresses are valid and actual email addresses.

OpenSSL error seen in logs​

By default, SMTP transports now perform TLS peer verification.

This may cause the following error to appear in logs where a self-signed SSL certificate is in use for the SMTP server:

Unable to connect with STARTTLS: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed

This behavior is configurable by defining the VERIFY_PEER element in mail.xml and setting the value to 0.

<system xmlns:config="http://www.jadu.co.uk/schema/config">
    <type>smtp</type>
    <host>localhost</host>
    <port>25</port>
    <ssl></ssl>
    <username></username>
    <password></password>
    <verify_peer>0</verify_peer>
</system>

Although it's not recommended to disable this verification for security reasons, it can be useful while developing the application or when using a self-signed certificate.

https://symfony.com/doc/5.4/mailer.html#tls-peer-verification