DEFER couldn't complete the check
FAIL authentication failed
CANCELLED authentication forced to fail by "*" response to challenge,
DEFER couldn't complete the check
FAIL authentication failed
CANCELLED authentication forced to fail by "*" response to challenge,
FAIL failed after reading a response;
either errno is set (for timeouts, I/O failures) or
the buffer contains the SMTP response line
FAIL failed after reading a response;
either errno is set (for timeouts, I/O failures) or
the buffer contains the SMTP response line
ERROR local problem (typically expansion error); message in buffer
To communicate with the remote host the client should call
ERROR local problem (typically expansion error); message in buffer
To communicate with the remote host the client should call