you might want to look at smapd in fwtk.
Luther S. Garcia |"How come you like know so much about
US SPRINT | getting chicks, but then you like
Sprintlink Engineering/Development | never get any?"
Herndon, VA. |
net | -Beavis
On Wed, 22 Jun 1994, Bob Snyder wrote:
> >We would like to know if there is a good way to determine is someone is
> >spoofing our mail gateway. Is there a "secure" smtpd or other software
> >available that will detect/reject connections from someone pretending to
> >be someone else?
> While sendmail 8 supports the ident protocol, you
> a) need to hope the remote site supports ident, and
> b) isn't providing bogus information.
> My Macintosh at home has an Ident daemon running on it. Of course, it
> returns anything I want it to.
> Generally, your mail transport software will put the IP name/address in the
> Received: headers, and you can trace those back, assuming the other sites
> keep logs.
> If you have a need for secure/nonspoofable email, you should probably
> handle this at the application level, using the variety of mail encryption
> programs that can both provide privacy and authentication of the sender,
> like RIPEM, PGP, or PEM (TIS/PEM).
> Bob Snyder N2KGO MIME, RIPEM mail accepted
> snyderra @
edu finger for RIPEM public key
> When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.