SMTP SASL SASL AUTH DIGEST-MD5 RFC2831 RFC4954 # # Server-side AUTH DIGEST-MD5 REPLY AUTH 334 cmVhbG09ImN1cmwiLG5vbmNlPSI1MzAwZDE3YTFkNjk1YmQ0MTFlNGNkZjk2Zjk1NDhjMjNjZWQ2MTc1IixhbGdvcml0aG09bWQ1LXNlc3MscW9wPSJhdXRoIg== REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM0MzMzMjMyMzQzMzMyMzMzNDMzMzIzNCIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwL2N1cmwiLHJlc3BvbnNlPWJkYmExNzYwOGY4NmMyZjEzYTczMTM1NzdkZjkyMzNkLHFvcD1hdXRo 334 REPLY 235 Authenticated # # Client-side smtp !SSPI debug crypto SMTP DIGEST-MD5 authentication mail body smtp://%HOSTIP:%SMTPPORT/907 --mail-rcpt recipient@example.com --mail-from sender@example.com -u user:secret -T - # # Verify data after the test has been "shot" EHLO 907 AUTH DIGEST-MD5 dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM0MzMzMjMyMzQzMzMyMzMzNDMzMzIzNCIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwL2N1cmwiLHJlc3BvbnNlPWJkYmExNzYwOGY4NmMyZjEzYTczMTM1NzdkZjkyMzNkLHFvcD1hdXRo MAIL FROM: RCPT TO: DATA QUIT mail body .