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by spc476
4892 days ago
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About the only way to validate an email address (short of sending it an email) is to parse the email address using BNF from RFC-2822 (I use LPeg to do that) and if that passes, then do a DNS MX lookup on the domain; if that fails, then do a DNS A lookup on the domain. That will at least tell you that an email can be delivered, not that it will be delivered and short of sending email, that's about the best you can do. |
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