[Mailer] google-mailer DSN configuration not valid anymore

[jeremyjaouen]

Symfony version(s) affected

5.4.*

Description

With recents change on GMail, the following configuration for MAILER_DSN:
MAILER_DSN=gmail://USERNAME:PASSWORD@default is no more valid, as the connection using username and password are not able anymore.

Is there any existing workaround or another configuration to be able to use SMTP with Google-Mailer ?

How to reproduce

• Install symfony/google-mailer
• Setup your .env with MAILER_DSN=gmail://USERNAME:PASSWORD@default (replace your username and password with your own credentials
• Implement use the MailerInterface to send an email
• Your Request shouldn't succeed with following error:

message: Failed to authenticate on SMTP server with username "xxxxxxx" using the following authenticators: "LOGIN", "PLAIN", "XOAUTH2". Authenticator "LOGIN" returned "Expected response code "235" but got code "535", with message "535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8  https://support.google.com/mail/?p=BadCredentials y18-20020a05622a121200b002f90a33c78csm17479301qtx.67 - gsmtp".". Authenticator "PLAIN" returned "Expected response code "235" but got code "535", with message "535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8  https://support.google.com/mail/?p=BadCredentials y18-20020a05622a121200b002f90a33c78csm17479301qtx.67 - gsmtp".". Authenticator "XOAUTH2" returned "Expected response code "235" but got code "334", with message "334 eyJzdGF0dXMiOiI0MDAiLCJzY2hlbWVzIjoiQmVhcmVyIiwic2NvcGUiOiJodHRwczovL21haWwuZ29vZ2xlLmNvbS8ifQ==".".

Possible Solution

No response

Additional Context

No response

[1ed]

As stated in the linked documentation you should enable 2-fa and use an App Password (https://support.google.com/accounts/answer/185833) or oauth to sign in. Using the regular password and less secure app option is not supported any more https://support.google.com/accounts/answer/6010255

To help keep your account secure, from May 30, 2022, ​​Google no longer supports the use of third-party apps or devices which ask you to sign in to your Google Account using only your username and password.

[jeremyjaouen]

Indeed, I have already read the doc from Google, but it remains that the Symfony Mailer Documentation is no more up to date regarding SMTP and Gmail

[fabpot]

@jeremyjaouen Can you submit a PR to update the docs?

[jeremyjaouen]

Hello @fabpot, sure I will submit a PR in few days

[med1995-ops]

Hello, I still can't solve the connection problem between Mailer and gmail. did you find the solution

[ikonoka]

I'd got the issue too (symfony/google-mailer": "6.1.*") . Seems GmailTransportFactory ignore dsn paramater "verify_peer" in her method 'create($dsn)', but built-in EsmtpTransportFactory does.
So instead of : MAILER_DSN=gmail://USERNAME:PASSWORD@default?verify_peer=0
Use : MAILER_DSN=smtp://USERNAME:PASSWORD@smtp.gmail.com:465?verify_peer=0

[mouataz1]

@ikonoka i just tried this but it's not working , i think we should move to another service

[Sevrahk]

I confirm that using App Password works
As @1ed said, you have to enable 2FA then create an App Password (https://support.google.com/accounts/answer/185833)

After creating it you can use MAILER_DSN=gmail://USERNAME:APP-PASSWORD@default

[MedDimessi]

@Sevrahk it does work, I hadn't test the mailer functionality in months and had the same issue, after creating the AppPassword and updated the .env MAILER_DSN=gmail://emailAddress:AppPassword@default and it worked.
This is my simple code for anyone find it useful.
$applicationEmailApr = (new Email()) ->from(new Address('Address', 'Name')) ->to($email) ->subject('subject') ->html("<p>any html within the body</p>"); try { $mailer->send($applicationEmailApr); } catch (TransportExceptionInterface $e) { throw new Exception($e->getMessage()); }

[TomaIvanovTomov]

2FA is enabled but the problem still persist ...
Tried everything:

gmail://mygmail@gmail.com:myapppass@default
gmail://mygmail@gmail.com:myapppass@default?verify_peer=0
gmail://mygmail@gmail.com:myapppass@default?verify_peer=1
gmail+smtp://mygmail@gmail.com:myapppass@default?verify_peer=0
gmail+smtp://mygmail@gmail.com:myapppass@default?verify_peer=1
gmail://mygmail@gmail.com:myapppass@smtp.gmail.com:587?verify_peer=0
gmail://mygmail@gmail.com:myapppass@smtp.gmail.com:587?verify_peer=1

And every single combination you can think of. Still got the error:

Connection could not be established with host "ssl://smtp.gmail.com:465": stream_socket_client(): Unable to connect to ssl://smtp.gmail.com:465 (Network is unreachable)

Obviously symfony has some problem.

[Sevrahk]

@TomaIvanovTomov

My configuration is gmail://mygmail:myapppass@default
It is close to your first suggestion but without the @gmail.com

Hope it helps ;)