| This system will check the validity of email addresses, using advanced verification techniques: |
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Check syntax to ensure address conforms to valid email rules. |
Perform a DNS lookup, checking that the domain is fully qualified to receive mail. |
Use the SMTP protocol to contact the domain mailserver and actually ask if the user is valid! |
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| Because of differing standards and systems, this email verification technology is correct for around 98 percent of email addresses. |