[SURBL-Discuss] Sendmail milter and SURBLs? sbl.spamhaus.org and SpamCopURI or urirhsbl?
Saw a link on the Spamhaus site to a sendmail milter:
http://www.five-ten-sg.com/dnsbl.html
"This milter will also decode (base64, mime, html entity) and scan for HTTP and HTTPS URLs and bare hostnames in the body of the mail. If any of those host names have A records on the SBL (or a single configurable list), the mail will be rejected unless previously whitelisted."
Seems to me that should be just as usable with SURBLs as the more limited spam body domain names in sbl.spamhaus.org. Has anyone tried this milter with SURBLs?
Conversely has anyone tried sbl.spamhaus.org as a SURBL in SpamCopURI or urirhsbl?
Either could be interesting....
Jeff C.
Additionally:
Installation and configuration
Usage: Note that this has ONLY been tested on Linux, specifically RedHat Linux. In particular, this milter makes no attempt to understand IPv6. Your mileage will vary. You will need at a minimum a C++ compiler with a minimally thread safe STL implementation. The distribution includes a test.cpp program. If it fails this milter won't work. If it passes, this milter might work. Fetch dnsbl.tar.gz and
tar xfvz dnsbl.tar.gz bash install.bash
At 16:09 3/05/2004, you wrote:
Saw a link on the Spamhaus site to a sendmail milter:
http://www.five-ten-sg.com/dnsbl.html
"This milter will also decode (base64, mime, html entity) and scan for HTTP and HTTPS URLs and bare hostnames in the body of the mail. If any of those host names have A records on the SBL (or a single configurable list), the mail will be rejected unless previously whitelisted."
Seems to me that should be just as usable with SURBLs as the more limited spam body domain names in sbl.spamhaus.org. Has anyone tried this milter with SURBLs?
Conversely has anyone tried sbl.spamhaus.org as a SURBL in SpamCopURI or urirhsbl?
Would there be any point ? Does sbl.spamhaus.org list hostnames ? (I didn't think so, but I could be wrong) I suspect that milter does a DNS lookup on the hostnames and checks the found ip address against the sbl, and SpamCopURI wouldn't do that...
Regards, Simon
On Sunday, May 2, 2004, 9:18:13 PM, Simon Byrnand wrote:
Would there be any point ? Does sbl.spamhaus.org list hostnames ? (I didn't think so, but I could be wrong) I suspect that milter does a DNS lookup on the hostnames and checks the found ip address against the sbl, and SpamCopURI wouldn't do that...
As I understand it, sbl does have a minority of domain names that might be found in message bodies, but most of what it has is IP addresses, which you correctly note largely would not be meaningful for SpamCopURI.
If the milter does name resolution that's definitely not what we want, but perhaps it could be modified to not resolve names. If it checks names to names from messages to RBL, then it could work with SURBLs.
Our data in the current SURBLs is specifically meant for the task we have set for them, so this was sort of a side question in the hope that we may be closer to a milter for sendmail which could be used with SURBLs.
Jeff C.
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Jeff Chan -
Simon Byrnand