On Wed, Jul 30, 2003 at 06:15:17PM -0600, collins wrote: ... >Unfortunately it's not comcast that will eat the bounces. In order to >get broadband service (DSL is not offered), I have to use comcast.net (I >don't know anything about comcast.com), and since people are so friendly >about bulk blocking of anything they don't like, I already have one user >list that I can neither unsubscribe from nor post to, since all mail is >bounced. > >comcast.net users have no control. Fortunately, I'm not being blocked >by any other group. It seems to me that spam filters would be a more >friendly approach, rather than assuming that all users on the domain are >spam.
You might be surprised at who's blocking comcast, and not just with RBLs, but router level blocks on SMTP from 12.254.0.0/16 and 172.128.0.0/10. We're talking some major U.S. national broadband providers who've given up on trying to get comcast/attbi to deal with their issues. AOL recently started block connections from any server that doesn't have rDNS (Reverse Domain Name Service). We've been doing that here for several months, and it has done wonders for the spam levels with few false positives. This isn't blocking on rDNS that doesn't agree with the HELO announcement, only hosts with no rDNS. It can be argued that anybody who's running a legitimate mail server should at least be able to get some type of rDNS working (and yes, I know of a local ISP here who's DSL netblocks come from uu.net, and uu.net can't/won't delegate the rDNS to the ISP). Folks on this list may well argue that this shouldn't apply to them, but for every cable/dsl use who has a clue, there are thousands who don't. The clueless ones install Windows systems directly to their broadband connection with no firewall/router, giving access to all the insecure Microsoft stuff (but I repeat myself). Bill -- INTERNET: [EMAIL PROTECTED] Bill Campbell; Celestial Systems, Inc. UUCP: camco!bill PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 URL: http://www.celestial.com/ We contend that for a nation to try to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle. -- Winston Churchill _______________________________________________ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc -> http://www.linux-sxs.org/mailman/listinfo/linux-users
