Symfony is throwing error when I try to send email. Apparently there is ssl certificate verification failure. The project is running on linux nginx server.
The .env file has following configuration.
MAILER_URL=smtp://user:[email protected]??encryption=ssl&auth_mode=login
Error log
app.ERROR: Could not send mail: Failed sending mail to following
recipients: {{ recipients }} with Error: Connection could not be
established with host "ssl://mail.ourserver.de :465":
stream_socket_client(): SSL operation failed with code 1. OpenSSL
Error messages: error:1416F086:SSL
routines:tls_process_server_certificate:certificate verify failed
Error Code:0
Do I need to get ssl certificate for the domain in this case "mail.ourserver.de" and add cert and key in linux openssl configuration?
A hack to make it work! I have found it in stackoverflow answers, but not sure if it’s a good practice and does that make the ssl connection vulnerable to attack?
verify_peer=false parameter
MAILER_URL=smtp://user:[email protected]??encryption=ssl&auth_mode=login&verify_peer=false
If i disable verify_peer option, it does work, but Is ssl verification taking place when peer verification is set to false or it’s being completely disabled?
2
Answers
It’s failing to verify your server’s certificate. There’s a guide for checking and updating certificates here. (it’s for
PHPMailerbut the parts regarding certificates are still relevant)If you did not add a SSL certificate yourself, but use SSL, you probably have an autogenerated, self signed certificate in place.
Yes, you should assign a domain name to the server and get some valid, trusted SSL certificate for it. You can use the free LetsEncrypt service. The details depend on the mail server software.