On Wed, 1 Oct 2008, Mike Cardwell wrote: > Marc Perkel wrote: > > > > I'm having luck looking up the name servers of the sending host to see > > if it's blacklisted > > But how accurate is it?
I did some similar experiments, and I found that it's not unusual for an email-oriented blacklist to catch a nameserver used for legitimate email. For example, a hosting service that has various dodgy web servers gets a /24 blocked which happens to include a nameserver which is not just used for the dodgy webservers but for various other well-behaved customers. > It seems that any host with valid RDNS of *.pipex.net is in your > whitelist. Who knows what else lurks in your lists. Any chance of > publishing the list data? Funnily enough I seem to remember problems with one of Pipex's name servers, though I was using a different blacklist. However I can't remember which company behind the Pipex name it was... Tony. -- <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> http://dotat.at/ ${sg{\N${sg{\ N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\ \N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}} -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
