Email error messages

----- The following addresses had permanent fatal errors -----

(reason: 550 ... User unknown) 



This error message means that the server does not recognize the mailbox. Probably due to a typographical mistake or because the mailbox was deleted.

 

: connect to test.test.com[111.111.11.11]: Operation timed out 



 

This means that the period of time during which the email can be sent has been exceeded. It could result from a slow or unstable internet connection.

Delay reason: mailbox is full.

This signifies that the mailbox is full and is unable to receive any new mail.

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