Re: Filtering out mail without a "From" header

"David W. Tamkin" <dattier(_at_)mcs(_dot_)net> writes:
> Liviu Daia suggested to Dominic Mitchell,
>
> |      :0:
> |      * ! ^From:
> |      spam
> | 
> |      :0:
> |      * ! ^(To|Cc):
> |      spam
> | 
> |      :0:
> |      * ! ^Received:
> |      spam
>
> Question for Philip and the other cognoscenti: how do those three recipes
> compare for efficiency to this?
>
>     :0
>     * ^From:
>     * ^(To|Cc):
>     * ^Received:
>     { }
>     :0E:
>     spam
The latter will be barely faster for non-spam (fewer recipes involved)
and infinitesimally slower for some spam (more conditions to be scanned).


Philip Guenther