P.S. I am doing all of this testing on my local machine.I have tested my smtp settings with this online website . 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="${APP_NAME}" 3 Answers
"mailbox unavailable 550 Sender address has null MX".
It seems your smtp server can't find the IP address of the receiving mail server. Are you sending to a valid email address? Have you set up a DNS MX record?
1This configuration is working well on my environment. Please try like this.
MAIL_MAILER=smtp MAIL_HOST=smtp.mailtrap.io MAIL_PORT=2525 MAIL_USERNAME=<your_username_goes_here> MAIL_PASSWORD=<your_password_goes_here> MAIL_ENCRYPTION=tls MAIL_FROM_ADDRESS=<your_email_goes_here> MAIL_FROM_NAME="${APP_NAME}"` 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]
