Szerző: Lena Dátum: Címzett: exim-users Tárgy: Re: [exim] Data ACL - Received: from header
P.S. I wrote:
> For a couple months some spam
with fake Received
> penetrated greylisting (I think that only one
> Russian botnet uses same $sender_address in all instances of same spam
> necessary for penetrating greylisting), but if I'm not mistaken,
> for last couple weeks that botnet switched to no fake Received line at all.
but with other recognizable signs in the header. I'm testing
a new complex set of conditions.