Re: smtp authentication (sendmail relay)

[Simon Josefsson <sj@extundo.com>]

Stainless Steel Rat <ratinox@peorth.gweep.net> writes:

> | In fact, not really sure where those smtp negotiations get handled.
> 
> If newsguy is doing what I suspect they are doing, they don't.
> Authenticated SMTP hooks into POP authentication.

There is SMTP AUTH (rfc 2554) and SMTP STARTTLS (rfc 2246 + 2595) too,
they are better than the POP cludge.

Harry might use telnet to find out if it's supported by the server or
not, just say "ehlo foo" to the server, and notice if STARTTLS or AUTH
CRAM-MD5 is part of the response.

$ telnet test.smtp.org 25
Trying 209.220.147.188...
Connected to test.smtp.org.
Escape character is '^]'.
220 test.smtp.org ESMTP Sendmail 8.11.2.Beta1 ready at Sun, 17 Dec 2000 10:38:48 -0800 (PST); see http://test.smtp.org/
ehlo foo
250-test.smtp.org Hello slipsten.extundo.com [195.42.214.241], pleased to meet you
250-ENHANCEDSTATUSCODES
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ONEX
250-ETRN
250-XUSR
250-AUTH DIGEST-MD5 CRAM-MD5 PLAIN LOGIN
250-STARTTLS
250 HELP