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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Schneier: ISPs should bear security burden
In article <[email protected]> you write: > >On Fri, 29 Apr 2005, Miller, Mark wrote: > >> Unfortunately, a lot of static "business" DSL IP space is still on >> those lists and legitimate mail servers can get blocked. I usually use >> the DUL as a "white list" to negate hits on the traditional dnsbls since >> those are almost always stale. > ><assertion type="applies to USA, don't know about other countries"> That's >because the ILECs, especially, don't feel the need to separate IPs on >which servers are allowed, and IPs on which they aren't. SBC is the worst >in this regard. No separation, no custom reverse DNS for DSL customers, no >way to be absolutely certain if sending mail from a specific IP is a >violation of SBC's TOS. </assertion> > >I've noticed that you work for Qwest. If the people designing your network >DO have enough clue to separate IPs, bravo... but my experience is that >many ISPs, especially ILECs/RBOCs, don't. > >-- >JustThe.net - Apple Valley, CA - http://JustThe.net/ - 888.480.4NET (4638) >Steven J. Sobol, Geek In Charge / [email protected] / PGP: 0xE3AE35ED > >"The wisdom of a fool won't set you free" > --New Order, "Bizarre Love Triangle" > Well OptusNet's cable ranges are in the DUL despite OptusNet filtering outbound 25 by default. You can get port 25 outbound opened on request but it doesn't do you any good when you are listed in the DUL. It doesn't matter if the address belongs to a business or a residential user. Everyone has the right to send email directly. As far as I can see the only reason for DUL existing is that ISP's are too slow at reacting to abuse reports and / or fail to send messages to say what action they took. People got feed up with [email protected]* being a blackhole from which they if they were lucky got an automatic acknowledgement of the messages. In the end people reacted the way you would expect them to react when that perceive that they are being ignored. They stopped reporting and turned to other means (DUL, SpamAssassin, etc.). Mark
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