Yes we do filter SMTP outbound from the dialup base. You are correct that our users should not have local mail servers. I can't speak to whether we constantly filter or only filter when we notice a problem. It's also possible that the spammers somehow figure out how to get around our filters from time to time. The end users source address ranges are the our IRR( whois.aoltw.net) under the route set RS-ATDN-DAHA. The data is also in the RADB. If there are specific questions please send them off-list. I may ICMP-REDIRECT you to our NOC though. Thanks, Cleve...
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Martin Hannigan Sent: Tuesday, July 02, 2002 11:03 AM To: jlewis@lewis.org Cc: Daniska Tomas; nanog@merit.edu Subject: RE: AOL mail netblocks
On Tue, 2 Jul 2002 jlewis@lewis.org wrote:
On Tue, 2 Jul 2002, Martin Hannigan wrote:
I was hoping someone was going to say that "AOL already does this themselves". In the 'old' days, there was a list of what to allow under .ipt.aol.com. It's pretty easy for them to do it, and I'm guessing that they do actually filter this outbound, or their managed modem providers may, I'm just looking for a confirmation.
I don't think they do filter outbound SMTP. I've gotten complaints from AOL dial-up users that AOL does not filter outbound SMTP, and that they don't provide outgoig SMTP servers (hard to believe), so we should not block AOL dial-up addresses, because these people have to run their own SMTP servers. My thought/feeling on this is "BS and apathy". The vast vast majority of AOL dial-ups have no business doing direct-to-MX email. The handful that think they do can find workarounds or a more appropriate provider.
Ok then, is there a place where I can bath myself in AOL dialup identified netblocks?
I'm not trying to start a spam discussion here on the Operations list <g> just get some operational information. -M
Cleve Mickles Network Architecture America Online, Network Operations