IIRC, someone posted a way to do this within Exchange.  I cant seem to
find the message at the moment.  Perhaps someone else has better
recall than I do.

In any event, personally, I dont see a need for this type of
scrubbing. IMO it only hinders troubleshooting.


On 9/22/07, Bennett Lee <[EMAIL PROTECTED]> wrote:
>
> Is it practical to implement an IP scrubber in ASSP to clean IPs from
> message headers and SMTP responses?
>
> I know this outside the scope of anti-spam, but broadcasting internal server
> names and IPs over SMTP is a glaring security issue for all Microsoft
> Exchange servers.  Don't know how many other mail servers do the same
> asinine thing as Microsoft.  Exchange can change the FQDN that it
> broadcasts, but according to an article I read, there is no way prevent
> Exchange from broadcasting internal IPs except via [non-existent]
> third-party software.  Hence, my hope that it could be implemented in ASSP.
>
> ASSP is already an SMTP proxy, so it seems a simple matter to RegEx the
> output (skipping the e-mail body, of course) and replace any private
> internal IPs with a corresponding public IP, or replace other private data
> like the FQDN.  The translation table could be input like the SMTP
> Destination Routing Table with the arrow/bars, e.g.:
> 192.168.1.1=>66.35.250.209|192.168.1.2=>66.35.250.209|internal.domain.local=>external.domain.com
> What do ya think?  Great idea, get to it when you can?  Or no way, ASSP is
> strictly anti-spam only?
>
> --Bennett
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