Is there a way to determine the name of the POP3 server for a given email
address?

You'd have to look up their MX records based on their domain name through
DNS

Yes, but how to do it is the problem.

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Maybe? http://www.franklins.net/dotnet/MailChecker.zip


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Thanks.  That gets me closer.

Given an email address, if I know the DNS server for its domain (which I can
get in code since I have written code to do whois), then the code in the
Vb.net project download you suggested provides a way to get the email server
associated with that email address.

However, that all depends on using a dll packaged with the code -- 
DNSObjects.dll.  What I would really like to see is the code that created
that dll, since that is where the work is done.  And I don't want to use a
dll in my project.


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