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How to check the existence of email id

Hi folks,

Is there any procedure to check weather the particular email id exist or not?

For example i want to check the email id  "rushdi@iccsat.com" exist or not how can i check.

I need the procedure in asp.net 2.0 with c#

Regards

Glenn
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dotsandcoms
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dotsandcoms
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DhaestCommented:
I don't like the idea that's someone is checking the emailaddress first ...
If that existed, it would take a lot less effort for spammers to send bulk mails !
How do you check if the address exist ? Some mailservers bounce the mail back, others don't tell you anything (even if the address doesn't exist)

Effective Email Address Validation
http://www.codeproject.com/KB/validation/Valid_Email_Addresses.aspx

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DhaestCommented:
Some tools on the market (not free)

You can use software to request information about "MX records" on the email address's domain.
Here is a good product that encapsulates the technology: http://www.aspnetmx.com/.

Checking email addresses for validity is a tricky process. EmailValidator.Net has made this process incredibly simple and powerful.
The only correct way to verify an email address exists is to send a mailbox an email and see if you receive a bounce back email or NDR (Non-Deliverable Receipt). EmailValidator.Net validate email addresses WITHOUT sending an actual email.
http://www.monoprog.com/prod/asp_net_components/email_validator_net.aspx
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