PHP - Swiftmailer Using Starttls and Self Signed Certificates

PHP - Swiftmailer using STARTTLS and self signed certificates

Editor's note: disabling SSL verification has security implications. Without verification of the authenticity of SSL/HTTPS connections, a malicious attacker can impersonate a trusted endpoint (such as GitHub or some other remote Git host), and you'll be vulnerable to a Man-in-the-Middle Attack.

Be sure you fully understand the security issues before using this as a solution.

Swiftmailer has now been updated to include an option for this. It can now be solved using the setStreamOptions method from your Swift_SmtpTransport instance rather than editing the swift class.

$transport = Swift_SmtpTransport::newInstance('smtp.server.com', 123, 'tls')
    ->setUsername('username')
    ->setPassword('password')
    ->setStreamOptions(array('ssl' => array('allow_self_signed' => true, 'verify_peer' => false)));

How to deal with self-signed TLS certificates in Laravel's SMTP driver?

Well in that link you provided the solution is straight-forward.

The correct solution is to fix your SSL config - it's not PHP's fault!

how to fix it? in config/mail.php ,'driver' => env('MAIL_DRIVER', 'smtp'), should be 'driver' => env('MAIL_DRIVER', 'mail'), (credits: Danyal Sandeelo)

Shopware: Unable to connect with STARTTLS without encryption

By default, the SMTP transport in the Symfony Mailer performs TLS peer verification. You can disable this verification by setting the parameter verify_peer to 0, for example:

MAILER_URL="smtp://localhost:25?encryption=&auth_mode=&verify_peer=0"

Symfony swiftmailer via smtp gmail on localhost openssl error

It seems, that the problem is the self-signed certificate as you are on your local machine.

You must add the following to your config.yml (or if you prefer to separate test/dev from prod in the subsequent config_dev.yml):

swiftmailer:
    # ... your other config
    stream_options:
      ssl:
        allow_self_signed: true
        verify_peer: false

This way it should work and you have dev and prod env separated.

Look also here: https://github.com/symfony/swiftmailer-bundle/tree/master/Tests/DependencyInjection/Fixtures/config/yml

Swiftmailer doesn't work

In my Gmail configuration I also need to define the swiftmailer encryption option to ssl.

Maybe you should add the following to your config?

parameters:
    mailer_transport: smtp
    mailer_host: mail.myweb.cz
    mailer_port: 587
    mailer_encryption: tls
    mailer_user: noreply@myweb.cz
    mailer_password: pass

And then in your app/config/config.yml file add those new options too:

swiftmailer:
    # ...
    port: %mailer_port%
    encryption: %mailer_encryption%

Reference: http://symfony.com/doc/current/reference/configuration/swiftmailer.html#encryption

---

Related Topics