'Expected response code 250 but got code "550", with message "550-Requested action not taken: mailbox unavailable 550 Sender address has null MX
P.S. I am doing all of this testing on my local machine.I have tested my smtp settings with this online website https://www.smtper.net/. Each one of below services are sending the emails.
I am trying to setup email confirmation system for my Laravel application and keep on getting this error with email created through cpanel.
I have tried using Gmail/mailtrap/mailosaur for testing with these settings and everything was working fine:
MAIL_MAILER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
[email protected]
MAIL_PASSWORD='password'
MAIL_ENCRYPTION=tls
[email protected]
MAIL_FROM_NAME="${APP_NAME}"
MAIL_MAILER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=ab723b95067210
MAIL_PASSWORD=password
MAIL_ENCRYPTION=tls
MAIL_MAILER=smtp
MAIL_HOST=mailosaur.net
MAIL_PORT=2525
[email protected]
MAIL_PASSWORD=password
MAIL_ENCRYPTION=tls
MAIL_FROM_NAME="${APP_NAME}"
but now when I am using my custom email i am getting this error in my logs file:
[2021-12-26 09:17:53] local.ERROR: Expected response code 250 but got code "550", with message "550-Requested action not taken: mailbox unavailable 550 Sender address has null MX " {"exception":"[object] (Swift_TransportException(code: 550): Expected response code 250 but got code "550", with message "550-Requested action not taken: mailbox unavailable 550 Sender address has null MX
MAIL_MAILER=smtp
MAIL_HOST=smtp.ionos.com
MAIL_PORT=587
[email protected]
MAIL_PASSWORD='password'
MAIL_ENCRYPTION=tls
[email protected]
MAIL_FROM_NAME="${APP_NAME}"
Solution 1:[1]
"mailbox unavailable 550 Sender address has null MX".
It seems your smtp server can't find the IP address of the receiving mail server. Are you sending to a valid email address? Have you set up a DNS MX record?
Solution 2:[2]
This configuration is working well on my environment. Please try like this.
MAIL_MAILER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=<your_username_goes_here>
MAIL_PASSWORD=<your_password_goes_here>
MAIL_ENCRYPTION=tls
MAIL_FROM_ADDRESS=<your_email_goes_here>
MAIL_FROM_NAME="${APP_NAME}"`
Solution 3:[3]
Make sure that the sender email is valid. By that I mean if the provider of your sender email exist.
Example of invalide email: [email protected]
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | kalleguld |
| Solution 2 | S Ahmed Naim |
| Solution 3 | archille gael |