hi -- for what it's worth, we have a set of rules in SVN which do a similar thing:
http://svn.apache.org/repos/asf/spamassassin/rules/trunk/sandbox/jm/20_dynrdns.cf However they're under a more open license than this: 'NOTE: The license allows anyone to use this technology, providing it is for non-commercial use, or for mail servers with less than 500 email addresses. If you are making money with this technology, we would appreciate your support for this project by 'Licensing' your implentation. For single server instances, licensing starts as low as $100/yr. Commercial Anti-Spam Vendors should contact us for other Licensing Models.' That's really quite restrictive, and I'm afraid is not compatible with the Apache license -- so we can't use your patterns, or vice versa... --j. Michael Peddemors writes: > We have opened a public list of regular expressions that are designed to > match > 2 different criteria. > > 1) Addresses which match DUL Forms, ie xxx.xxx.xxx.pool.adsl.domain.com > 2) Addresses which match a source which has been reported as sending > unsolicited bulk mail (NON-DUL) > > > In MagicMail Systems, this rule is treated as an absolute rule on the STRICT > settings, (DUL Regex Match) rather than a scoring method, and is handled at > the SMTP layer, by doing a reverse resolution of the sendor IP Address. > > Although we are aware that this can stop mail from legitimate mail servers, > who are improperly configured.. > > (And I mean in the general sense. "Best Practises for operating a Mail > Server" > documents by MAAWG and other Anti-Spam task forces all indicate that a server > generating emails should have a reverse DNS resolution which represents the > responsible party, ie mail servers or gateway in front of mail servers should > not resolve to a DUL style address of their provider) > > .. other mail servers may benifit from this collaborative effort. If someone > is interested in testing the list of regular expressions for HAM/SPAM, and > see it's validity as a rule for use in SA, please feel welcome. > > You can generate lists of either the DUL or NON-DUL forms from the following > URL, and feel free to contribute other entries as well. > > http://www.linuxmagic.com/opensource/anti_spam/dynamic_regex > > The lists are regularly updated, and you can choose to generate 'tested', > 'testing' or 'user contributed' entries. > > This is a fairly new public tool, and we are interested in all input. > However, > it has been very helpful in identifying new Bot Generated Spam from infected > PC's on DUL Networks worldwide. > > -- > "Catch the Magic of Linux..." > -------------------------------------------------------- > Michael Peddemors - Senior Systems Developer > LinuxAdministration - Internet Services > NetworkServices - Programming - Security > Wizard IT Services http://www.wizard.ca > Linux Support Specialist - http://www.linuxmagic.com > LinuxMagic is a Registered TradeMark of Wizard Tower TechnoServices Ltd. > -------------------------------------------------------- > (604)589-0037 Beautiful British Columbia, Canada > > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to which they > are addressed. If you have received this email in error please notify > the system manager. Please note that any views or opinions presented in > this email are solely those of the author and do not necessarily > represent those of the company.
