laravel swift-mailer exception “Expected response code 250 but got an empty response” using gmail smtp-relay (database queue driver)

thanx for the answer but I dont really know how to fix it like that

It worked man. Thats so weird. You think thats the best place to set the $_SERVER['SERVER_NAME'] variable? Couldn't we set it config/app.php via an env()? THanks for the reply

I'm not sure about placing that inside app.php. With what I understand is that it returns an array of values for the config() helper but does not set things inside the $_SERVER global variable and it's native to the app and not global. So I assumed that it is best placed in the boot of the APP so that I'm sure the SERVER_NAME is set before anything else. I'm just lazy to bootstrap it as a hook before an email sends. I know it's not elegant but works for me. haha!

/**
     * The event listener mappings for the application.
     *
     * @var array
     */
    protected $listen = [
        Registered::class => [
            SendEmailVerificationNotification::class,
        ],
        'Illuminate\Mail\Events\MessageSending' => [
            'App\Listeners\SetDomainForSmtp',
        ],
    ];

@fallenknight85 based on what you taught me i came up with this event driven method. add this to your event service provider, in the boot() for the listener (i made mine SetDomainForSmtp) you can set the global $_SERVER['SERVER_NAME'] in response to an email being sent. this hooks into the event before so its perfect for avoiding setting the global on other request-response cycles. seems to work great

dude I tried your suggestion but I experienced again the issues with SMTP. I reverted back to appserviceprovider.php

should work once the cache is cleared?

this is my listener class

<?php

namespace App\Listeners;

use Illuminate\Mail\Events\MessageSending;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Queue\InteractsWithQueue;

class SetDomainForSmtp
{
    /**
     * Create the event listener.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     *
     * @param  MessageSending  $event
     * @return void
     */
    public function handle(MessageSending $event)
    {
        $_SERVER['SERVER_NAME'] = config('app.mail_domain') ?? '127.0.0.1';
    }
}

the event provider class

<?php

namespace App\Providers;

use Illuminate\Auth\Events\Registered;
use Illuminate\Auth\Listeners\SendEmailVerificationNotification;
use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Event;
use App\Matter;
use App\User;
use App\Observers\MatterObserver;
use App\Observers\UserObserver;

class EventServiceProvider extends ServiceProvider
{
    /**
     * The event listener mappings for the application.
     *
     * @var array
     */
    protected $listen = [
        Registered::class => [
            SendEmailVerificationNotification::class,
        ],
        'Illuminate\Mail\Events\MessageSending' => [
            'App\Listeners\SetDomainForSmtp',
        ],
    ];

    /**
     * Register any events for your application.
     *
     * @return void
     */
    public function boot()
    {
        parent::boot();

        Matter::observe(MatterObserver::class);
        User::observe(UserObserver::class);
    }
}

You can set SERVER_NAME= directly in your env file.

then opening tinker and >>> $_SERVER the name will be listed in the variables echoed

im gonna give that a try

that would be \etc\hosts for the entire server right? i had some entries mapped to it already but not my domain. im not super advanced in linux. @snapey have you tried this or have any tips for it? our server is provisioned via forge and it wont be multisite but you think it would cause any issues trying it?

Will that work when running under PHP CLI?

I tried on php artisan command, and it works...

Please advice, you must set your server hostname with Fully Qualifed Domain Name.

@metasanjaya This works for me, tks!

@lucasjose501 Please did you finally solve the issue? Kindly share with me what you did

@lucasjose501 Still the solution is working on my side. If you're using Laravel 9, you may want to also configure MAIL_EHLO_DOMAIN="<your_domain>", also be sure that you are using the correct encryption for the specified port. Usually, if MAIL_PORT=587, your MAIL_ENCRYPTION=tls, whereas, MAIL_PORT=465 is MAIL_ENCRYPTION=ssl.

IF you are using SMTP Relay, ensure both IPv4 and IPv6 of the host containing the App are whitelisted on the RELAY host.

SYNC method works perfectly. for QUEUES, on experience, REDIS QUEUE on Ubuntu 22.04, I have to run PHP artisan optimize to make it work.

@viktor3177 If it's possible on your Google Workspace SMTP Relay configuration, use the IP Authentication instead of the SMTP Auth. If you are using SMTP Auth, be sure that the MAIL_USERNAME exists in the Directory and if 2FA is enabled you cannot use the Account Password. Instead, it would be best to generate an App Password for the SMTP Auth Account. The password that you are going to use is the generated app password. Also take note that smtp-relay.gmail.com uses port 587 for MAIL_PORT. If using IP Auth, keep MAIL_USERNAME, MAIL_PASSWORD to null.