Hello,

I see you have two things out. 1st you using RBLS, that could give you a 
lot positive false spam. 2nd you completely have commented out best thing 
in SPAMDYKE. Is sniffing IPs in reverse DNS. Most of bots and spams 
comming from Internet zombies. Here are my advices:

1 - comment out dns-blacklist-entry=zen.spamhaus.org
2 - uncoment reject-empty-rdns, reject-ip-in-cc-rdns, 
reject-missing-sender-mx and reject-unresolvable-rdns
3- into /etc/spamdyke/blacklist_recipients add your domain in format 
@your-domain (it will block all mails like to: n...@your-domain from: 
n...@your-domain)
4- into /etc/spamdyke/ip-in-rdns-keyword-blacklist-file put these words :

dsl
.com
.net
broadband
dynamic

I could guarantee you will fall bellow 1% of SPAM with nearly zero false 
positives. Of course someone who can't follow certain guidelines for 
theirs servers will not be able to send you e-mails at all. But you can 
easily handle it by adding IP's in /etc/spamdyke/whitelist_ip or adding 
senders into /etc/spamdyke/whitelist_senders

I stop using any RBLS services ages ago, they are way unreliable.

Good luck,
Eduard Švarc

DATA Intertech s.r.o.
Kladenská 46
160 00 Praha 6
Czech Republic
tel. +420-235365267, fax +420-235361446

[email protected] wrote on 14.12.2009 07:24:03:

> Dear team
> 
> Greetings to all who is doing/coding such a great application
> 
> I am experiancing few issues, when i use spamdyke to block the 
> spam's, most of the real time spam's are getting blocked, wherein 
> the false positives ratio is alos significant.
> 
> Can anyone of you please help me?
> 
> my spamdyke.conf
> 
> cat /etc/spamdyke/spamdyke.conf
> #dns-blacklist-entry=zombie.dnsbl.sorbs.net
> #dns-blacklist-entry=dul.dnsbl.sorbs.net
> #dns-blacklist-entry=bogons.cymru.com
> dns-blacklist-entry=zen.spamhaus.org
> #dns-blacklist-entry=bl.spamcop.net
> graylist-dir=/var/spamdyke/graylist
> graylist-exception-rdns-entry=/etc/spamdyke/graylist-exception-rdns-file
> #graylist-level=none
> graylist-max-secs=2678400
> graylist-min-secs=180
> greeting-delay-secs=5
> idle-timeout-secs=6000
> ip-blacklist-file=/etc/spamdyke/blacklist_ip
> ip-in-rdns-keyword-blacklist-file=/etc/spamdyke/blacklist_keywords
> ip-in-rdns-keyword-whitelist-file=/etc/spamdyke/whitelist_keywords
> ip-whitelist-file=/etc/spamdyke/whitelist_ip
> access-file=/etc/spamdyke/access-file
> local-domains-file=/var/qmail/control/rcpthosts
> log-level=info
> log-target=stderr
> max-recipients=50
> #policy-url=http://my.policy.explanation.url/
> rdns-blacklist-file=/etc/spamdyke/blacklist_rdns
> rdns-whitelist-file=/etc/spamdyke/whitelist_rdns
> recipient-blacklist-file=/etc/spamdyke/blacklist_recipients
> recipient-whitelist-file=/etc/spamdyke/whitelist_recipients
> #reject-empty-rdns
> ##reject-ip-in-cc-rdns
> #reject-missing-sender-mx
> #reject-unresolvable-rdns
> sender-blacklist-file=/etc/spamdyke/blacklist_senders
> sender-whitelist-file=/etc/spamdyke/whitelist_senders
> tls-certificate-file=/var/qmail/control/servercert.pem
> 
> @400000004b1df18e1c8961bc.s:@400000004b1d283c1d694a0c spamdyke[23866]: 
>  DENIED_RBL_MATCH from: validemai...@pcisecurity_xxxxx.org 
>  <mailto:[email protected]> to: 
[email protected] 
>  origin_ip: 74.53.136.146 origin_rdns: ruby2.fastnix.com auth: (unknown)
> 
>  spamhaus lookup as follows
>  IP Address Lookup
> 
>  *74.53.136.146 is not listed in the SBL*
>  *74.53.136.146 is not listed in the PBL*
> 
>  *74.53.136.146 is not listed in the XBL*
> 
> 
> --Nic
> 
> Windows 7: Find the right PC for you. Learn more.
> _______________________________________________
> spamdyke-users mailing list
> [email protected]
> http://www.spamdyke.org/mailman/listinfo/spamdyke-users
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