Re: Postgrey experiment at VGER

2006-12-15 Thread Folkert van Heusden
>May I suggest a smarter way to filter these spammers, by just whitelisting >email addresses of valid posters, after sending a confirmation for the >first post. Now if these spammers get smart, and start using personal >email addresses, I would certainly expect some real action by abused email

Re: Postgrey experiment at VGER

2006-12-13 Thread Rick
In article <[EMAIL PROTECTED]>, Matti Aarnio <[EMAIL PROTECTED]> wrote: > I am running an experiment with Postgrey to delay (for 300 seconds >minimum) incoming emails. If the clients don't retry after this >delay, then the messages don't usually get in. So far it is working very well. Usuall

Re: Postgrey experiment at VGER

2006-12-13 Thread David Rees
On 12/13/06, Giacomo A. Catenazzi <[EMAIL PROTECTED]> wrote: So a challange to the kernel hackers: build a mail filtering/proxy system, a' la BSD. I don't remember the specification and features, but IIRC the netfilter is not enough to do the graylisting (but pf was). Someone has some hints what

Re: Postgrey experiment at VGER

2006-12-13 Thread Thomas Davis
Dumitru Ciobarcianu wrote: On Wed, 2006-12-13 at 01:50 +0200, Matti Aarnio wrote: I do already see spammers smart enough to retry addresses from the zombie machine, but that share is now below 10% of all emails. My prediction for next 200 days is that most spammers get the clue, but it gives us

Re: Postgrey experiment at VGER

2006-12-13 Thread Horst H. von Brand
Giacomo A. Catenazzi <[EMAIL PROTECTED]> wrote: [...] > So a challange to the kernel hackers: build a mail filtering/proxy > system, a' la BSD. Has no reason to be in-kernel. Email is a complex subject in and by itself, don't mix it in here. > I don't remember the specification and features, bu

Re: Postgrey experiment at VGER

2006-12-13 Thread Gene Heskett
On Wednesday 13 December 2006 09:11, Al Boldi wrote: >Trond Myklebust wrote: >> On Wed, 2006-12-13 at 11:25 +0200, Dumitru Ciobarcianu wrote: >> > On Wed, 2006-12-13 at 01:50 +0200, Matti Aarnio wrote: >> > > I do already see spammers smart enough to retry addresses from >> > > the zombie machine,

Re: Postgrey experiment at VGER

2006-12-13 Thread Giacomo A. Catenazzi
Al Boldi wrote: Trond Myklebust wrote: On Wed, 2006-12-13 at 11:25 +0200, Dumitru Ciobarcianu wrote: On Wed, 2006-12-13 at 01:50 +0200, Matti Aarnio wrote: I do already see spammers smart enough to retry addresses from the zombie machine, but that share is now below 10% of all emails. My predi

Re: Postgrey experiment at VGER

2006-12-13 Thread Al Boldi
Trond Myklebust wrote: > On Wed, 2006-12-13 at 11:25 +0200, Dumitru Ciobarcianu wrote: > > On Wed, 2006-12-13 at 01:50 +0200, Matti Aarnio wrote: > > > I do already see spammers smart enough to retry addresses from > > > the zombie machine, but that share is now below 10% of all emails. > > > My pr

Re: Postgrey experiment at VGER

2006-12-13 Thread Trond Myklebust
On Wed, 2006-12-13 at 11:25 +0200, Dumitru Ciobarcianu wrote: > On Wed, 2006-12-13 at 01:50 +0200, Matti Aarnio wrote: > > I do already see spammers smart enough to retry addresses from > > the zombie machine, but that share is now below 10% of all emails. > > My prediction for next 200 days is tha

Re: Postgrey experiment at VGER

2006-12-13 Thread Dumitru Ciobarcianu
On Wed, 2006-12-13 at 01:50 +0200, Matti Aarnio wrote: > I do already see spammers smart enough to retry addresses from > the zombie machine, but that share is now below 10% of all emails. > My prediction for next 200 days is that most spammers get the clue, > but it gives us perhaps 3 months of le