SMTP SASL SASL AUTH NTLM SASL-IR RFC4954 NTLM # # Server-side AUTH NTLM REPLY AUTH 334 TlRMTVNTUAACAAAAAgACADAAAACGggEAc51AYVDgyNcAAAAAAAAAAG4AbgAyAAAAQ0MCAAQAQwBDAAEAEgBFAEwASQBTAEEAQgBFAFQASAAEABgAYwBjAC4AaQBjAGUAZABlAHYALgBuAHUAAwAsAGUAbABpAHMAYQBiAGUAdABoAC4AYwBjAC4AaQBjAGUAZABlAHYALgBuAHUAAAAAAA== REPLY TlRMTVNTUAADAAAAGAAYAEAAAAAYABgAWAAAAAAAAABwAAAACAAIAHAAAAALAAsAeAAAAAAAAAAAAAAAhoIBAFpkQwKRCZFMhjj0tw47wEjKHRHlvzfxQamFcheMuv8v+xeqphEO5V41xRd7R9deOXRlc3R1c2VyV09SS1NUQVRJT04= 235 Authenticated # # Client-side smtp NTLM SSL !SSPI SMTP NTLM authentication with initial response mail body smtp://%HOSTIP:%SMTPPORT/%TESTNUMBER --mail-rcpt recipient@example.com --mail-from sender@example.com -u testuser:testpass --sasl-ir -T - # # Verify data after the test has been "shot" EHLO %TESTNUMBER AUTH NTLM TlRMTVNTUAABAAAABoIIAAAAAAAAAAAAAAAAAAAAAAA= TlRMTVNTUAADAAAAGAAYAEAAAAAYABgAWAAAAAAAAABwAAAACAAIAHAAAAALAAsAeAAAAAAAAAAAAAAAhoIBAFpkQwKRCZFMhjj0tw47wEjKHRHlvzfxQamFcheMuv8v+xeqphEO5V41xRd7R9deOXRlc3R1c2VyV09SS1NUQVRJT04= MAIL FROM: RCPT TO: DATA QUIT mail body .