On Fri, 30 Jan 1998, Sherwood Botsford wrote:
> Has anyone got a perl script for decoding headers. E.g.
> I think it would be cool of have a script that you could feed
> a set of headers to, that would do things like:
>
> A. Check on the existence of the various hosts it came through.
Hosts mentioned may not even be reachable (ex. an internal e-mail
server that passes Internet e-mail to an external machine).
> B. Calculate the time differences for each step of hte way.
> highlighting ones that were unreasonable.
Received headers are notoriously non-standard, and clocks on many mail
servers are wrong.
> C. Attempt to verify that the user in question exists.
Which user? The sender or receiver? Both can already be done by Exim.
> D. Check that the declared from fits the source machine.
Just isn't possible to figure this out.
> E. check that various intermediate machines actually are
> mail exchangers.
This is basically the same as A. See my comments for A.
> E. automate whatever other consistency checks are possible.
Tom
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