Verify that a user's email exists in provided domain using PHP

Question

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check if email are valid and exists
How to validate an email address in PHP

I am developing a application for sending mail by provided mail address in PHP. now i wanna validate given mail address is really exist in domain or not

  **i.e
    abc@xyz.com (for example its registred in xyz domain)
    abcd@xyz.com (for example its nod registred xyz domain)**

how can i verify it by using PHP.

Thanks in advance

Have a look at this topic. http://stackoverflow.com/questions/1976712/using-mx-records-to-validate-email-addresses — Jelmer, Nov 09 '12 at 12:57
Even if it could be done, it'd be pointless. What if e-mail exists but belongs to someone else? — Álvaro González, Nov 09 '12 at 13:00

score 8 · Accepted Answer · answered Nov 09 '12 at 12:57

8

Generate a token
Store that token against the email address in a database
Send an email to that address with a URL that includes the token and a hash of the email address

If someone visits that URL, then the address exists.

SMTP provides a mechanism to ask if a server hosts a particular address, but it is almost always disabled as it is a favourite tool of spammers.

answered Nov 09 '12 at 12:57

Quentin

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Correct. There's no other way. Seriously. E-mail is not different from snail mail. – Álvaro González Nov 09 '12 at 12:59
its mean we must send email to given address there's no alternate way – M_A_K Nov 09 '12 at 13:19

Verify that a user's email exists in provided domain using PHP

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