When sending email I receive an error message.
This means that there is a problem with the recipient’s email address. The message will explain the problem; normally "Receiver does not exist."
This means that there is a problem with the recipient’s email address. The message will explain the problem; normally "Receiver does not exist."
----- The following addresses had permanent fatal errors ----- (reason: 550 ... User unknown)...
You can do that at cPanel - "Email" - "Email Authentication".
Go to cPanel - "Mail" - "Email accounts" Find the mailbox you need and click "Password"....
Go to cPanel: click "Mail" - "MX entry", choose "Remote Mail Exchanger". Click "Add New Record"...
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