Per Jessen wrote:
Theo Van Dinter wrote:
On Thu, May 31, 2007 at 09:46:56AM +0200, Per Jessen wrote:
I've been looking at what a rot13'ed email-address looks like, and it
doesn't come close to matching the pattern above.
rot13 is a common/well-defined version of a single substitution
cipher. This rule tries to match those, not the rot13 a-m <-> n-z
mapping specifically.
Then why is the pattern very specific wrt '^' and '(' ?
Because it's very common (or at least was at one time) for spammers to
rot13 the target addresses and then do those specific substitutions.
--
Kelson Vibber
SpeedGate Communications <www.speed.net>
