[Gross] Spammers adapt

[Rolf E. Sonneveld]

Hi, Eino,

Eino Tuominen wrote:
> Hi,
>
> I just noticed that our match rate is much higher now than it has been 
> before. I did some log analysis and found lots of patterns like this:
>
> Feb 28 19:39:32 smtp01 grossd: [ID 702911 mail.info] #a78: greylist: 
> 190.48.141.76 jr.tolerd at kecoindustries.com our-user
> Feb 28 19:39:36 smtp01 grossd: [ID 702911 mail.info] #a79: greylist: 
> 190.48.141.76 jr.tolerd at kecoindustries.com our-user
> Feb 28 19:39:47 smtp01 grossd: [ID 702911 mail.info] #a24: match: 
> 190.48.141.76 jr.tolerd at kecoindustries.com our-user
>
> That is, retries go now beyond 10 seconds delay I've been using. I just 
> resized our filter_bits to 26 and set grey_delay=120.
>
> Next I've decided to implement weights on checks and implement that 
> block_threshold so grossd can reject obvious spammers with permanent 
> errors. I've been pondering this kind of setup:
>
> dnsbl = bl.spamcop.net;2
> dnsbl = dnsbl.njabl.org;1
> dnsbl = dnsbl.sorbs.net;1
> dnsbl = zen.spamhaus.org;3
> dnsbl = rbl-plus.mail-abuse.org;3
> block_threshold = 4
>   

in which version is this 'weight' factor available?

/rolf