New Milter coming

Alex Neuman van der Hans alex at
Thu Nov 30 18:30:26 GMT 2006

I'd love to test it; it would be excellent if combined efforts from 
several spamtraps could be combined in ONE dnsbl. I could create a 
country-specific DNSBL which I'd be willing to host myself for the 
Republic of Panama, although I *have* been getting a lot of Guatemalan 
spam for no apparent reason :-)

Dennis Willson wrote:
> I don't use postfix and I have not looked at their interface so probably 
> not. I will do some looking around for their interface information and 
> see what it would take to make it work there.
> On Tue, 28 Nov 2006 15:14:01 -0500
>  Gerard Seibert <gerard at> wrote:
>> On Tuesday November 28, 2006 at 02:39:24 (PM) Dennis Willson wrote:
>>> I have been writing a milter I call milter-spamtrap. It allows an 
>>> active sendmail server to also be a spamtrap or honeypot.
>>> You can have email addresses within a domain that is actually used 
>>> for real users or dedicate entire domains or any combination of both 
>>> as your honeypots.
>>> Upon receiving an email for an email address defined as a 
>>> honeypot/SpamTrap, the milter will log the IP address and optionally 
>>> the headers and/or body of the email in either a text file or to a 
>>> MySQL database or both. It can cache in memory the IP addresses of 
>>> offending servers and from then on block them upon connection.
>>> A future enhancement will be to scan the database via a cron job and 
>>> create a DNSBL zone file for publishing a blacklist. The saved 
>>> headers/body can be used as evidence as to why a server was 
>>> blacklisted. Many, many configurable options including Whitelisting 
>>> via CIDR block so some servers will never be listed as an offending 
>>> server if you want.
>>> I believe I will have it ready for Beta (although I am testing/using 
>>> it myself right now) sometime next week. I'm 'pre-announceing' so 
>>> that if there is any interest I will package it for others to use and 
>>> make it available and I need to do additional documenation if others 
>>> are going to use it. If there's no interest I will just use it myself.
>> Will this milter be compatible with Postfix. I presently have the
>> development version -- 2.4 -- installed. I know that clamav-milter does
>> not work correctly which is one of the reasons I abandoned it.
>> -- 
>> Gerard
> --------------------------------------------------
> Dennis Willson
> taz at
> Ham (Extra Class): ka6lsw
> Scuba: Rescue Diver, EANx, Wreck, Night, Alt, Equip, UW Photographer, 
> Gas Blender
> Owner: Kepnet Internet Services
> Life should not be a journey to the grave with the intention of arriving 
> safely in a nice looking and well preserved body, but rather to skid in 
> broadside, thoroughly used up, totally worn out, and loudly proclaiming, 

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