Among the other reasons to not use this approach mentioned already is . . . Some spam fighting systems, mine included, monitor the maillog and quickly throw up a firewall rule blocking access to the system as soon as delivery is attempted to an invalid address. The object is to block dictionary attacks. The benefit is that your system no longer processes email destined for bogus addresses. There's a side effect of the sender being cut off after the first invalid address so any spam addressed to multiple adressees will never get delivered to legit addressees either.

Be Appropriate && Follow Your Curiosity

In reply to Re^2: Finding if email addresses exist? by mikeraz
in thread Finding if email addresses exist? by cosmicperl

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