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- Xref: sparky ba.internet:349 news.admin.misc:275 comp.mail.uucp:2022 comp.mail.sendmail:2712 comp.mail.misc:3612
- Path: sparky!uunet!stanford.edu!morrow.stanford.edu!pangea.Stanford.EDU!karish
- From: karish@pangea.Stanford.EDU (Chuck Karish)
- Newsgroups: ba.internet,news.admin.misc,comp.mail.uucp,comp.mail.sendmail,comp.mail.misc
- Subject: Re: Any easy way to filter this type of UUCP traffic?
- Date: 7 Nov 1992 18:41:58 GMT
- Organization: Mindcraft, Inc.
- Lines: 45
- Distribution: ba
- Message-ID: <1dh2lmINNlfc@morrow.stanford.edu>
- References: <1992Nov5.165936.13003@igor.tamri.com> <1992Nov7.002938.8197@fasttech.com>
- NNTP-Posting-Host: pangea.stanford.edu
- Summary: Fix your map entry
-
- In article <1992Nov7.002938.8197@fasttech.com> zeke@fasttech.com
- (Bohdan Tashchuk) writes:
- >In <1992Nov5.165936.13003@igor.tamri.com> jbass@igor.tamri.com
- (John Bass) writes:
- >> What starting my bitching last year was uunet's refusal to filter out mail
- >> traffic routed thru DMSD. I wanted them to ONLY forward mail with a terminal
- >> address at dmsd (dmsd.com).
- >
- >Does anyone know how the average site can do this?
-
- Mail routers are sending UUCP traffic through your
- site because you've advertised "cheap" connections to your
- UUCP neighbors.
-
- Read the periodic posting in comp.mail.maps, and change
- your site's map entry to make the links to your neighbors
- look more expensive.
-
-
- The UUCP maps should be the highest authority on the proper
- weighted topology of the UUCP network. Filtering traffic
- without changing the maps is a bad idea. It's rude and
- disruptive to drop other peoples' mail on the floor, and
- re-routing it after you've received it (or after your
- forwarder has received it) is a waste of communications
- resources, and could well cause router loops or deadlocks.
-
- You can fix the problem by causing the remote routers to
- choose different routes. Remember, though, that your users
- depend on the generosity of your neighbors and their
- correspondents' neighbors whenever they send mail that's
- more than one hop from the Internet. Don't be more frugal
- than you have to be in assigning costs to your links.
-
- To try out a change in your advertised costs, make the
- modifications to your local map entry and run pathalias
- from the point of view of an existing remote system. This
- will show you how attractive your site is as an
- intermediate node. You might also look at your downstream
- neighbors' map entries, and ask them to change their
- weights as appropriate.
- --
-
- Chuck Karish karish@mindcraft.com
- (415) 323-9000 x117 karish@pangea.stanford.edu
-