How do I fix SMTP Error 550?

How do I fix SMTP Error 550?

How do I fix a 550 error?

1. Check for email address typos.
2. Check whether the email IP is blacklisted.
3. Try sending the email after some time.
4. Try changing your outgoing mail port.
5. Check whether IP filtering is enabled.
6. Enable SMTP authentication.
7. Troubleshoot the SSL method.
8. Contact your ISP.

What does this mean 552 1 requested mail action aborted mailbox not found?

From the error message, it shows that there is issue with the recipient account or mail server. Recipient will have to check this issue with their mail provider.

How do I fix SMTP connection error?

How to fix SMTP Error: Failed to connect to server

1. Modify the firewall rules on the server to allow outbound connections on ports like 465.
2. Modify the SMTP restrictions on the server.
3. Edit PHPMailer settings like Host, Port etc.
4. Correct DNS resolution for mail server.

Is a 550 an RBL?

When you receive an Error 550 Message Rejected (or blocked) when trying to send an email, this means that a spam filter has blocked the message. This error is occurring because your email domain is appearing in a Real-time Blackhole List (RBL).

Why does my SMTP not work?

If you’re using an SMTP authentication like SSL, check again your username and password. There’s a port problem. SMTP normally uses port 25, but it may happen to be blocked by your ISP: try switch to port 587 (or port 465 if you’re connecting via SSL). The SMTP settings are mistaken.

Can’t connect to SMTP server?

Most common reason for ‘Outlook cannot connect to SMTP server’ error is the wrong configuration settings of Outlook. A mis-spelled mail server name to a wrong port setting in Outlook can cause connectivity issues to the mail server and end up giving error while trying to send or receive mails.