exception documentation

Base class for ESMTP client errors.

Inherited from SMTPClientError:

Method __bytes__ Undocumented
Method __init__ No summary
Method __str__ Undocumented
Instance Variable addresses Undocumented
Instance Variable code Undocumented
Instance Variable isFatal Undocumented
Instance Variable log Undocumented
Instance Variable resp Undocumented
Instance Variable retry Undocumented