tlug: Real email addresses

[Darren Cook <darren@example.com>]

Is there a good way to check if an email address is valid? We want to send
thank-you emails out when someone applies from a web form, but ideally we
don't want the invalid address emails coming back to a human. We want them
quietly written to a log file where they can be dealt with in batches.

Ideally we want to know if the persons address exists before we send the
email. Is this possible? Are there programs/scripts to do this?

TIA,

Darren

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