Thanks. Even if I can't verify the whole email address, is it cost effective to verify the domain part of the email address.
If so, how do I do this using javascipt, html, or asp?
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How to confirm an email address electronically?
Is there any way to check the validity of an email address by doing something similar to the ping of a url except that I am checking for the existence of an email address?
Maybe an email validation through telnet or something.
The objective is to check and see if I have a valid email address by trying to reference the email address. When a person updates or stores an email address, I want to check to make sure the address is valid by actually having my code reference it and get a response. That way I know I am not storing junk email addresses.
I do have the code to check for the general syntax of an email, but that does not ensure the email address is valid. It only checks for correct syntax.
(Tools: ASP, Javascipt, SQL, CDO.Message)
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Answers
Yes, telnet validation works.
See code in PHP http://www.webdigi.co.uk/b
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by: SysExpertPosted on 2007-06-20 at 08:23:20ID: 19325420
Not really, since you would probably NOT be able to access all the mail servers directly due to SPAM and other filtering as well as issues with reverse DNS.
I hope this helps !