DNS Email Validation using .Net

I have a good javascript function that validates the email address but I would like to check the DNS of the email to make sure that at least its a good domain.

What is the best way to check the DNS using .Net and can I check to see if the email address is valid within the domain?

Thank you in advance!

James.
jgoodaleAsked:
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Michel SakrConnect With a Mentor Commented:
Hi
Check this article with regards to querying MX records.. http://www.eggheadcafe.com/articles/20050129.asp
As for checking the validity of a mailbox it becomes tricky as telnetting to the mail server will give you no info unless you email that box,
Usually the best thing to do is to have a manual validation process, you send an email to the email owner with a link and unique random key, he clicks on it and and validates his email this way..

Regards
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jgoodaleAuthor Commented:
Perfect answer. used javascript to validate the email then used a confirmation email to validate the account.
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