copied from smtp.log:
""...
...
[16:46:36] S: 250-8bitmime
[16:46:36] S: 250-AUTH GSSAPI NTLM LOGIN
[16:46:36] S: 250 AUTH=LOGIN
[16:46:36] C: AUTH NTLM
[16:46:36] S: 334 NTLM supported
[16:46:36] C: TlRMTVNTUAABAAAAB4IAogAAAAAAAAAAAAAAAAAAAAAFAJMIAAAADw==
[16:46:36] S: 334 TlRMTVNTUAACAAAACgAKADgAAAAFgoGiuV6qon8A5yIAAAAAAAAAAIoAigBCAAAABQLODgAAAA9UAFQASABNAEMAAgAKAFQAVABIAE0AQwABABIAUwBUAFQAMQBFAFgARgAwADYABAAWAFQAVABIAE0AQwAuAEwATwBDAEEATAADACoAUwBUAFQAMQBFAFgARgAwADYALgBUAFQASABNAEMALgBMAE8AQwBBAEwABQAWAFQAVABIAE0AQwAuAEwATwBDAEEATAAAAAAA
[16:46:36] C: TlRMTVNTUAADAAAAGAAYAJIAAAAYABgAqgAAABAAEABIAAAAKgAqAFgAAAAQABAAggAAAAAAAADCAAAABYKAogUAkwgAAAAPUwBPAE4ARABFAFIAMAAxAHMAZQBoAGEAcABvAG4AZABlAHIAQAB0AHQAbQBhAGkAbAAuAGMAbwBtAFMATwBOAEQARQBSADAAMQBxLft4owQPqvgCKYuFXdgvZAvYtKgOdIDwHD4S9xm0H/ZXOR9Kmuh9vJVx6PUtBFI=
[16:46:41] S: 535 5.7.3 Authentication unsuccessful.
[16:46:41] C: AUTH LOGIN
[16:46:41] S: 334 VXNlcm5hbWU6
[16:46:41] C: c2VoYXBvbmRlckB0dG1haWwuY29t
[16:46:41] S: 334 UGFzc3dvcmQ6
[16:46:41] C: c2hwOTZzdA==
[16:46:41] S: 235 2.7.0 Authentication successful.
...
...""
Question 1: how to resolve initial NTLM unsuccessful authentication?
If answer to 1 not available:
Question 2: how to make client opt for AUTH LOGIN instead of AUTH NTLM initially.
Thank you.
""...
...
[16:46:36] S: 250-8bitmime
[16:46:36] S: 250-AUTH GSSAPI NTLM LOGIN
[16:46:36] S: 250 AUTH=LOGIN
[16:46:36] C: AUTH NTLM
[16:46:36] S: 334 NTLM supported
[16:46:36] C: TlRMTVNTUAABAAAAB4IAogAAAAAAAAAAAAAAAAAAAAAFAJMIAAAADw==
[16:46:36] S: 334 TlRMTVNTUAACAAAACgAKADgAAAAFgoGiuV6qon8A5yIAAAAAAAAAAIoAigBCAAAABQLODgAAAA9UAFQASABNAEMAAgAKAFQAVABIAE0AQwABABIAUwBUAFQAMQBFAFgARgAwADYABAAWAFQAVABIAE0AQwAuAEwATwBDAEEATAADACoAUwBUAFQAMQBFAFgARgAwADYALgBUAFQASABNAEMALgBMAE8AQwBBAEwABQAWAFQAVABIAE0AQwAuAEwATwBDAEEATAAAAAAA
[16:46:36] C: TlRMTVNTUAADAAAAGAAYAJIAAAAYABgAqgAAABAAEABIAAAAKgAqAFgAAAAQABAAggAAAAAAAADCAAAABYKAogUAkwgAAAAPUwBPAE4ARABFAFIAMAAxAHMAZQBoAGEAcABvAG4AZABlAHIAQAB0AHQAbQBhAGkAbAAuAGMAbwBtAFMATwBOAEQARQBSADAAMQBxLft4owQPqvgCKYuFXdgvZAvYtKgOdIDwHD4S9xm0H/ZXOR9Kmuh9vJVx6PUtBFI=
[16:46:41] S: 535 5.7.3 Authentication unsuccessful.
[16:46:41] C: AUTH LOGIN
[16:46:41] S: 334 VXNlcm5hbWU6
[16:46:41] C: c2VoYXBvbmRlckB0dG1haWwuY29t
[16:46:41] S: 334 UGFzc3dvcmQ6
[16:46:41] C: c2hwOTZzdA==
[16:46:41] S: 235 2.7.0 Authentication successful.
...
...""
Question 1: how to resolve initial NTLM unsuccessful authentication?
If answer to 1 not available:
Question 2: how to make client opt for AUTH LOGIN instead of AUTH NTLM initially.
Thank you.