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finding out what software a mail server is using?

From: Dale Therio
Date: Friday, February 18, 2000
Time: 8:51:00 am

Hi folks,

We are trying to find out what email server software the
majority of our clients are using. This is due to the way in
which some of the higher ups want us to send files to them.

We have some people internally claiming that 90% of our clients
use Exchange (I think our clients are much smarter than that!).
The higher ups want to send an embedded URL to the people that
receive our pfd documentation to our new video version of
research information. And since another company is hosting the
video feeds for us they want to hide the domain name of the
other company (the webpages are designed to look like our
corporate pages). And since this is a Bank I work for we
especially need to do things the right way.

One person sugegsted simply sending an email to xxxx@domain.com
and then reading the bounce message. I turned this idea down as
it could be interperted as though we were trying to spam or
otherwise launch some sort of attack on these servers.

We could of course send an email to postmaster@..... and ask
them, but this could take sometime and of course some domains
don't even have a postmaster account. We should also be able to
tell from any bounced messages what software they are using but
we want to do this the right way.

I own DNS Expert but don't think this would be able to tell me
this information.

Any ideas?

Thanks!

Dale



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