Hi everyone :waving_hand:, I’m getting the same "Failed to send email. Reason: Invalid login: 535 Authentication failed. " error when clicking the “Forgot?”-link on the admin login screen of my self-hosted website which I needed to do since my login credentials didn’t work anymore. Also: New subsc…

Thank you @mjw for keeping pointing me in the right direction. After a good night’s sleep my brain was able to troubleshoot again! Using swaks (and filling in the right parameters in the placeholders :roll_eyes:) I searched for articles containing the error code returned on mailgun.com and end up on…

Try setting “secure” to “false”. The “false” is confusing – it’s still secure. Have a look here, for example: [image] Since there's a builtin Mailgun integration, do I need to update the code? Integrations & API This likely needs to be "secure": false. The naming is conf…

Thank you Jannis! Never bothered to try changing that parameter since it had been working this way for a few years now. Just tried it and there is good and bad news: The error message (when clicking “Forgot?”) changed to “Failed to send email. Reason: Greeting never received.” For new subscribers …

What do your server logs say? That’s usually more helpful to debug specific issues like this :slight_smile:

[2024-04-04 14:39:36] ERROR "POST /members/api/send-magic-link/" 500 30142ms NAME: EmailError CODE: ETIMEDOUT MESSAGE: Failed to send email. Reason: Greeting never received. level: normal "Please see https://ghost.org/docs/config/#mail for instructions on configuring email." Error: Greeting never…

Okay, my bad. The “secure: false” is for port 587, not 465. Might be worth trying that port to see if it resolves the issue(s)?

The above error is for the new subscriber-error in the portal. The one below for the password reset. [2024-04-04 14:41:49] ERROR "POST /ghost/api/admin/authentication/password_reset/" 500 30321ms NAME: EmailError CODE: ETIMEDOUT MESSAGE: Failed to send email. Reason: Greeting never received. leve…

Now we’re back to: [2024-04-04 14:46:35] ERROR "POST /ghost/api/admin/authentication/password_reset/" 500 204ms NAME: EmailError CODE: EAUTH MESSAGE: Failed to send email. Reason: Invalid login: 535 Authentication failed. level: normal "Please see https://ghost.org/docs/config/#mail for instruct…

I’d have a look at this thread, particularly the recommendations to check with SWAKS and startTLS. [image] Requesting Help Troubleshooting Mailgun Self-hosting There is an authentication error. Double check the password—it’s something like 24 chars.-8 chars.-8 chars. Addi…

Thank you @Cathy_Sarisky ! The only thing in the swaks-output that seems off is: <** 501 Username used for auth is not valid email address The e-mail I’ve used all these years never was valid (no inbox coupled). Have requirements changed? (complete swaks-output below) === Trying smtp.mailgun.org…

Check that the sending domain has a valid SPF record. My guess is that you have a MX for the bare domain and also a subdomain for use with Mailgun.

Failed to send email. Reason: Invalid login: 535 Authentication failed

Developer help Self-hosting

Cathy_Sarisky April 4, 2024, 2:56pm 9

I’d have a look at this thread, particularly the recommendations to check with SWAKS and startTLS.

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Failed to send email. Reason: Invalid login: 535 Authentication failed

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