Milter-greylist

On Thu, Jun 5, 2008 at 8:27 AM, Oliver Fromme <olli@...> wrote:
>
> John Villalovos wrote:
>  > Jun  3 08:39:47 john-desktop milter-greylist: unexpected void
>  > backreference no 1 in regex /.*@\(.*\.\)*example\.com/ against
>  > "<example@...>"
>
> I'm afraid I can't explain the message.  But FWIW, I use
> a slightly different regex for that kind of things:
>
> /.*[@.]example\.com/
>
> Its purpose is the same:  It matches someone@...
> as well as someone@..., but it does not
> match someone@....
>
> This regex is more efficient, because grouping with \(\)
> combined with "*", "+" or "?" is less efficient than using
> character sets with "[]" like above (at least in the regex
> library I'm familiar with).  It's also less dependent on
> the regex implementation and dialect; it works with basic
> REs as well as with extended REs.

Thanks.  I will give that a try.

John