email checker

[brainwork]

If I have 100000 Email ID,I want send email to all but before sending mails I want Check Email ID is correct or not ?

I am not talking about Syntax checking I want test Email ID Validation.

I want c++ code for Email validation
please reply soon

[helios]

According to RFC 2822, the regular expression for email address validation is
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])

[chrisname]

Really? And how is any human supposed to understand that?

[brainwork]

thanks helios,

if mail id is destroy, like EMP is left your any organization and his mail id is persist.
so how can i understand this email id is not valild.

[moorecm]

Regular expressions are very, very useful. I highly recommend learning them.

[brainwork]

hi moorecm
i know Regular expressions are very useful but its checking from client and its not useful if Email id is looking good according to RFC2822 but Email id is not VAILD, i want check from server side.
i thinks you Understand my Problem.