Email Id validation for real or not using jQuery -


is possible validate email in way whether existing emailid(that in use, not fake) using builtin functions in jquery.

then website forms recognize if non-existing id's entered. when try send confirmation mail, & if it's not sent successfully, come know it's fake one?

first off, email validation using built-in jquery function not going option you; it's built support wide range of functionality , considered niche.

email validation can take many shapes; i'll try summarize them here, in order of accuracy / reliability:

  1. it matches regular expression (bad) or validated according rfc2822 (good) - http://tools.ietf.org/html/rfc2822#section-3.4.1

  2. the domain part of email address has @ least 1 associated mx record; if not present, associated (ipv4) / aaaa (ipv6) record should used (less reliable though) - http://tools.ietf.org/html/rfc5321#section-2.3.5

  3. the established connection listed mail exchange server responds positively rcpt to: command - http://tools.ietf.org/html/rfc5321#section-4.1.1.3

  4. a confirmation email sent , didn't bounce directly (hard bounce)

  5. a confirmation email received intended recipient , clicked confirmation link therein or otherwise confirmed reception of email.


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