Yep.... Steve is a smart man. The solutions I gave are good but can
ruin your own performance totaly without it being your mistake. The
bad performance of a different server (which you probably don't even
know!) can ruin the speed of your site. Depending on the importance
of the check you'll have to decide yourself what to do.
If you _do_ want to check the email-adresses using the mx-checks,
but you don't want to take the chance of slowing down your site, you
can always consider batch-processing. Accept the addresses based on
the RE and store them (e.g. in a db). Then at night (or whenever)
you can start a script that iterates through the list, checking all
mx-entries.
And for the usernames that you can't track. It's the nicest feature
a mailserver has! You wouldn't be able to do anything normal anymore
if the users could be tracked. Every spam-"service" would be
scanning your mailserver and spamming it to death!!
So... you'll just have to accept the username...
--
* R&zE:
***************************
** Renze Munnik
**
** E: [EMAIL PROTECTED]
** M: +31 6 218 111 43
***************************
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