Email verification in php

Question

Possible duplicates:
What is wrong with this RegEx for checking emails?
How to check if an email address exists? How to check if a mailing address exists without sending email?

I was wondering if it is possible to check email address with php (w / library or without). When I say confirmation, I do not mean the regular expression, I mean that the email address is actually a valid address to which emails can be sent.

Answer 1

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Answer 2

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