nanog mailing list archives
Re: Spammer Bust
From: Russ Haynal <russ () navigators com>
Date: Fri, 05 Sep 1997 16:57:42 -0400
At 04:35 PM 9/5/97 -0400, Jeremy Elson wrote:
I had two very similar incidents of PSI not knowing what was going on. I've gotten a lot of spam that originated from PSI dialup users but using Earthlink as a mail relay; for example, this one:
Recognize that Earthlink is a "national" provider by virtue of the fact that its customers are allowed to connect through PSI and UUNEt POPs (and other ISP's POPs?). Just last week I established an Earthlink dial-up acount for one of my relatives. Many of the Earthlink POP phone numbers turned out to be Phone numbers belonging to PSI, UUNET. It was interesting that the PPP Dial-up logon user ID was of the form: "ELN/userid" The "ELN/" in front of the userid stands for Earthlink Network, so that PSI/UUNET knows to which ISP to route the particular dial-up user. I would suggest that your particular Spammer IS an Earthlink User, (who happens to dial-in through a PSI POP) In this instance, I guess PSI would have to be considered "just an innocent carrier" like the local phone company that also helps the Spammer reach his ISP (Earthlink) [One alternative thought, (and it's a messy one)... Most ISP's can restrict their mail gateways to accept their customers only, but I wonder if Earthlink would be able to configure its mail server to prohibit customers of PSI's and UUNEt's Dial-up services from using Earthlink's mail server.] Russ __________________________________________________________________ Russ Haynal - Internet Consultant, Instructor, Speaker "Helping organizations gain the most benefit from the Internet" russ () navigators com http://navigators.com 703-729-1757 ------------------------------------------------------------------ Author:"Internet; A Knowledge Odyssey" (Top-rated CD-ROM Tutorial) Available from MindQ Publishing: http://www.mindq.com
Current thread:
- Spammer Bust Mark E Larson (Sep 05)
- Re: Spammer Bust Phil Howard (Sep 05)
- Re: Spammer Bust Phil Howard (Sep 05)
- Re: Spammer Bust Jeremy Elson (Sep 05)
- Re: Spammer Bust Russ Haynal (Sep 05)
- Re: Spammer Bust Phil Howard (Sep 05)
- Re: Spammer Bust Rick Horowitz - Network Administrator (Sep 05)
- Re: userid prefixes Alan Hannan (Sep 06)
- Re: Spammer Bust Jeremy Elson (Sep 05)
- Spam protection for larger networks (Was Re: Spammer Bust) Rod Nayfield (Sep 05)
- Re: Spam protection for larger networks (Was Re: Spammer Bust) Peter Marelas (Sep 06)
- Message not available
- Re: Spammer Bust Jay R. Ashworth (Sep 05)
- Re: Spammer Bust Steve Mansfield (Sep 05)
- BGP blackholing spam [was Spammer Bust] Randy Bush (Sep 05)
- Re: BGP blackholing spam [was Spammer Bust] Paul A Vixie (Sep 06)
- Re: BGP blackholing spam [was Spammer Bust] Alex.Bligh (Sep 06)