The server rejected our credentials.

Either the username, password, or challenge response given to the server was rejected.

This is considered a non-fatal error (the connection will not be dropped).

Inherited from SMTPClientError (via ESMTPClientError):

Method __init__
Instance Variable code Undocumented
Instance Variable resp Undocumented
Instance Variable log Undocumented
Instance Variable addresses Undocumented
Instance Variable isFatal Undocumented
Instance Variable retry Undocumented
Method __str__ Undocumented
Method __bytes__ Undocumented
API Documentation for Twisted, generated by pydoctor at 2020-03-20 23:54:06.