Milter-greylist

> Am Donnerstag Mai 15 2008 16:00 schrieb Benoit Branciard:
> > attila.bruncsak@... a écrit :
> > >> - /@gmail\.com$/ means "any address ending with "@...". In
> > >> milter-greylist this would never match, since all envelope
> > >> FROMs always
> > >> end with ">".
> > >
> > > Do the spammers know that they must comply to the standard?
> > > I already seen e-mail addresses in the envelop without 
> opening "<" and
> > > closing ">". Unfortunately the sendmail happily accepts it.
> > > Since that time I always use like:
> > > /@gmail\.com[ 	>]*$/
> > > (Please note, there are a tab and a space in addition to 
> the ">" in the
> > > brackets.)
> >
> > You're right, I just verified Sendmail accepts envelope FROM's and
> > RCPT's without angle brackets, and they are transmitted as-is to
> > milter-greylist. So your regexp seems the right way to go...
> 
> may be I am missing something, but why would you want to 
> whitelist spammers 
> that don't comply to the standard? 
> Isn't it that legitimate(!) mails form gmail.com always would 
> have "gmail.com>" in their envelope-from?
> 

My note wasn't specific to gmail.com in whitelising their servers if SPF matches.
I used the term "like" gmail.com just for an example.
There are other valid ACL context where it really counts the precise match, for example:

racl greylist rcpt /@mycompany\.com>/

and

racl greylist rcpt /@mycompany\.com[ 	>]*$/

would give different result in the greylisting if the spammer use or
does not use surrounding "<" and ">" for the address myuser@... .

I hope this clarifies the point.

Bests,
Attila