Hey Gordon - I implemented the "0.9" version of SPF into a beta of AVP that I'm testing now, and it also includes the full functionality of the CHECKMX filter (but without the Dr Watson problems checkmx seems to have). I'm also implementing greylisting into new featureset under development.
The problem with SPF is that Meng Weng Wong is radically changing the protocol six or seven times a day, and I've given up on keeping up. Id like to implement your DMP instead, espcially since the good aspects of SPF were stolen from your internet draft for DMP anyway by those guys :) I have already modified the MMS receiver service to be able to shell out and use filters and block messages at the time of the RCPT TO: and DATA: portion of the SMTP conversation, passing the IP, domain, HELO name and MAIL FROM: parameters to an external application, and using the exit code from that application in the determination of its response to the delivering MTA. It also can pass the message to the external app before it replies to the delivering server with the 250 status, instead reponding with a customizable response code and string, (i.e. 451) and even blacklisting the delivering server's IP for a period based upon content. It would seem that I can just add your lookupdmp.exe as one of a chain of filters. Worthwhile? -- Eric ----- Original Message ----- From: "Gordon Fecyk - Home" <[EMAIL PROTECTED]> To: "IMS Users Mailing List (E-mail)" <[email protected]> Sent: Friday, November 14, 2003 6:41 PM Subject: Need Help with DMP Survey Some of you know I am working on a sender authenticaton project called the Designated Mailers Protocol. Many folks interested in DMP want to know what kind of impact it will have on a mail system, as it will certainly reduce the SMTP traffic amounts, but will also increase DNS traffic. Most of the proposals to identify senders use DNS in some form. All I need are some mail logs, but most mailers IMS included don't provide message size information. Pan-Am's mail spool is too small for an accurate sampling. What I want to do is write an MFILTER plugin that will query my own server for DMP records, and record the resulting traffic amounts. I can use this information to determine if DMP will save or cause more traffic. As Pan-Am's system is too small, I'd like a volunteer or a few to install the plugin on their server so it can generate logs for me. The plugin itself will automatically "accept" all mail so no mail will be lost. I'll program it as a "pre" plugin. Ideally, a site recording this information should have fifty or more e-mail users with a somewhat "regular" spread of spam, list mail, "normal" mail, and so on. "spamtraps" will skew the results considerably, so if you have spamtraps I'd rather you not volunteer. In the interest of privacy, I'll state that I'll only use the log information to generate totals and percentages, which will in turn be used to generate metrics. I plan to publish the totals and metrics as a section in the next DMP draft. I don't plan on identifying individuals and if you don't want I won't even identify you as a volunteer. I just need some numbers. The DMP spec currently known to the anti-spam community: <http://www.pan-am.ca/dmp/draft-fecyk-dsprotocol-04.txt> It's gone through some changes since then, but the premise is the same. I have a DMP resolver for NT here: <http://www.pan-am.ca/dmp/lookupdmp.zip> -- PGP key (0x0AFA039E): <http://www.pan-am.ca/[EMAIL PROTECTED]> What's a PGP Key? See <http://www.pan-am.ca/free.html> GOD BLESS AMER, er, THE INTERNET. <http://vmyths.com/rant.cfm?id=401&page=4> This is the discussion list for the IMS Free email server software. To unsubscribe send mailto:[EMAIL PROTECTED] Delivered by Rockliffe MailSite http://www.rockliffe.com/mailsite Rock Solid Software (tm) This is the discussion list for the IMS Free email server software. To unsubscribe send mailto:[EMAIL PROTECTED] Delivered by Rockliffe MailSite http://www.rockliffe.com/mailsite Rock Solid Software (tm)
