RE: SMTP Filter and STARTTLS (SSL)

  • From: "Deus, Attonbitus" <Thor@xxxxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Wed, 01 May 2002 14:41:19 -0700

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At 02:28 PM 5/1/2002, you wrote:
>http://www.ISAserver.org
>
>
>Did I miss something?
>TLS (SMTP-SSL) doesn't have anything to do with SMTP-AUTH?
>AUTH is a user-authentication, while TLS is a data-obfuscation through
>encryption.
>
>BTW Tim, I liked your "selective SecureNAT" idea.  Maybe you should join the
>ISA-author ranks?


So what is the deal?  Let's start from the top... When publishing SMTP 
through ISA, and when the SMTP Filter is disabled, SMTP and SMTPS work just 
fine.
The STARTTLS SMTP command is not part of the default SMTP commands that the 
filter lets through, so you have to add it.  I gave it 100 bytes.

Now, when the filter is active and you got to negotiate a SSL Session, the 
server accepts the STARTTLS command, but nothing after that.  It just sits 
there.  Nothing in the logs, BTW.
So, the question is, how do I keep the SMTP Filter active and still be able 
to submit SMTPS??

- ---

I'm glad you like the selective SNAT deal- it is really working out 
well.  Maybe I *should* consider writing something!

T


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