[antispam-f] Re: Odd rejection by @domaincaps
- From: Dave Barnett <as10@xxxxxxxxxxxxxxxxx>
- To: antispam@xxxxxxxxxxxxx
- Date: Sat, 19 Apr 2008 21:50:33 +0100
In a recent message Harriet Bazley
<lists@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> On 13 Apr 2008 as I do recall,
> Dave Barnett wrote:
>> It was quite correct. The "Delete From: @domaincaps" rule rejected
>> apparent spam with "Subject: Delivery Status" . The From: was
>> "From: <>". Unexpected but logical, there is, however, a potential
>> for false positives.
>>
> Hmm, I'm not sure about the logicality of it... I'd attempted to trap
> for that possibility with the test
> end$=FNgetdomain(D$)
> IF LEN(end$)<1 THEN =FALSE
> Unfortunately in this particular case FNgetdomain returns "<" due to
> not being able to find an @ at all - I'd suggest adding a similar trap
> to FNgetdomain:
> DEF FNgetdomain(in$)
> LOCAL ptr%,domain$
> ptr%=INSTR(in$,"@")
> IF ptr%=0 THEN=""
> ...
> (Ideally one would throw an error at this point on the grounds that the
> function has been passed nonsense input, but in an AntiSpam context that
> wouldn't really help matters much - this seems the safest bet, given the
> other contexts I'm currently calling FNgetdomain in....)
As it has only happened once, best leave as is. 100% is ideal but
don't spoil the very good test.
--
Dave
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