Smtp auth type ntlm. Apr 23, 2024 · The NT LAN Manager (NTLM) Authentication: Simple Mail Transfer Protocol (SMTP) Extension introduces the following messages, as specified in sections 2. Dec 27, 2016 · Any SMTP auth type, regardless if you use PLAIN or an advanced method, just provides application level authentication. Dec 10, 2016 · What would the format be? Something like "domain/user password"? Not so simple: NTLM does not transmit passwords in an unencrypted form. 1. Authorization in the SMTP RFC probably doesn't include any support for NTLM so I would assume you're using Exchange or something that extends the original spec, but you know what they say about assuming. After a user is authenticated over SMTP, there will be no automatically encrypted connection. Actually, this document describes in detail the work NTLM - I recommend to read for understanding. Jan 13, 2025 · This section illustrates the NT LAN Manager (NTLM) Authentication: Simple Mail Transfer Protocol (SMTP) Extension with an example scenario in which an SMTP client successfully authenticates to an SMTP server using NTLM. . Sep 16, 2008 · You may want to be more specific about your environment, etc. SSPI supplies a flexible API for handling opaque, provider-specific authentication tokens; the NTLM Type 1, Type 2, and Type 3 messages are such tokens, specific to and processed by the NTLMSSP. But what you want is transport level security. 2. 9. This section illustrates the NT LAN Manager (NTLM) Authentication: Simple Mail Transfer Protocol (SMTP) Extension with an example scenario in which an SMTP client attempts NTLM authentication to an SMTP server, and the authentication fails. Here is an example SMTP session with NTLM authentication. 1 through 2. vgvc uxye vqfsou ilnkcpo sqx lyfpjpd tgg mlhm kjwido pkoaar