Qualified catchall (via regex or some other qualifying method??)

[andreturpin]

hello group,
using OSS edition (thanks big Z for a great system making my life easier!) 5.02on debian etch...

hey i was just wondering if anyone has had any success doing a qualified catchall address, what i mean by that is,
i'm not looking to collect gobs of spam, but i do need to run a catchall to grab
addresses that follow a pattern,
pattern being 1234567890@mydomain.com or 4567890@mydomain.com
(these are for catching cellular sms messages hopping out of our cell sms gateway)
i'd really like to be able to use regex or maybe something easier to qualify messages inbound for my catchall,
or (!!!) maybe even something fuzzy to match misspelt names (but that could be an entirely bad can of worms to open up too)

anyone have ideas or experience doing this?

thanks,
andre