[nflug] SMTP Auth

[Mark Musone]

It's in the AUTH command in the SMTP session. For example:

   S: 250-smtp.example.com Hello client.example.com
   S: 250 AUTH GSSAPI DIGEST-MD5 PLAIN
   C: AUTH PLAIN dGVzdAB0ZXN0ADEyMzQ=
   S: 235 2.7.0 Authentication successful

In this example, it's using the AUTH PLAIN mechanism (there's many that can
be used and negotiated, for example LOGIN, GSSAPI, MD5, KERBEROS..etc..
For AUTH PLAIN, it's a base-64 encoding of the username and password..

Mark


-----Original Message-----
From: nflug-bounces at nflug.org [mailto:nflug-bounces at nflug.org] On Behalf Of
Robert Wolfe
Sent: Friday, December 21, 2007 12:59 PM
To: nflug at nflug.org
Subject: [nflug] SMTP Auth

Just a quick question.  When a user uses SMTP AUTH to send mail, does 
the username used for authentication on the server get recorded in the 
headers by any chance?  I've looked in the associated RFC for this but 
do not see it mentioned anywhere.

--
Robert Wolfe
Systems Administrator
LocalNet Corp.
CoreComm Internet Services
(517) 664-8924

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