Henrik K a écrit :
> On Wed, Oct 22, 2008 at 02:05:02PM -0300, Reinaldo de Carvalho wrote:
>>> Sorry but developing stupid regexpes anywhere is not appropriate, especially
>>> when it can be done right. But hey, you are free to block /.*/ if you want,
>>> who am I to judge. It certainly blocks spam!
>>>
>>>
>> Regexp to reject "generic hostname" like dialup, dsl, cable, is not stupid.
>
> I guess you have missed the point entirely. The regex HAS FPS with
> multi-level TLDs. So it is stupid and buggy.
>
> If it's fixed, it's not stupid anymore.
>
> Best way is to code a policy server with that can split domains, using for
> example Mail::SpamAssassin::Util::RegistrarBoundaries. Or then just create a
> big regex containing all the TLDs.
>
If it's just for boundaries, you can do it like this (will miss some,
but better FN than FP):
/yourpattern.*\.[^\.]+\.([^\.]+\.[^\.]{2}|[^\.]{3,})$/
but even that isn't enough. the expressions must be "protected" even if
they are not in the top 2/3 labels. so instead of /dhcp/, on should use
/[-\.]dhcp[-\.]/ and so on.
while I am in, here are some funny ones:
/\.in-addr\.arpa\./
/\.nodnsyet\./
/\.unknown\./
/\.unassigned\./
...
etc.
now all this depends on what you do with...
