I want to validate complete Email address. I am not asking to match using pericular string.
but suppose someone enter email id firstname.lastname@example.org then first the bnm should be validated and if such domain found then also it should check for such email@example.com is available or invalid.???
Can anyone tell me how can i do this?>?>
preguntado el 09 de enero de 11 a las 04:01
Validating an email address and verifying the account actually exists are two very different things.
One way (and possibly the only effective way) to do this is at the end of the user registration process, send a 'reply required to confirm' email to the supplied email address (after checking the format is correct).
As Greg Hewgill noted, you should expire registrations that do not receive a reply in a certain time period, say 7 days.
Or you could use some Email validation service for verifing if they exists. I have found one for you Best Coding Pratices, well this is a free service and has some limitations on it.
If you dont like it you can google for other email validation services.