North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: AGIS Signing up New Spammers
On Mon, Nov 17, 1997 at 01:18:21PM -0500, Leo Bicknell wrote: > In article <[email protected]> you write: > >Best guess at ths time, without having had a full review done, is that > >filtering spam at the source *might* fall into the same category. However, > >since in theory mail is *personal* in nature ratehr than broadcast, it might > >be deemed to fall into the same category as blocking all carrier route sorted > >bulk mail in the real world. However, note that you *can't* get USPS to do > >that, either. > > The follow your argument wouldn't there be a difference > between blocking e-mail from a site (eg, the RBL, or your own > sendmail.cf rules) and blackholing an entire site at the IP > level? In one case you are acting as an editor claiming that > only mail is offensive, in the other you are acting as a > service provider preventing damage to your network? > > It would seem to me that if you argue that the site > causes "network problems" and simly toss all of their packets > regardless of content you are safer. It is also nastier to > the spammer/their provider (eg one or two bad apples > render all of AGIS's network unreachable to a great many), > which in theory should get better responce to fix the > problem. > > To site an example, no one questions a providers > ability to filter a site when it is Smurf'ing them, why not > when spamming them? > > -- > Leo Bicknell - [email protected] > Network Engineer - Dimension Enterprises > 1-703-709-7500, fax, 1-703-709-7699 Filtering at the SMTP level does exactly that. It prevents the damage done by the spam. Its also carefully crafted to do ONLY that, where a general packet filter is not. A general packet filter is appropriate in the case of a smurf attack. -- -- Karl Denninger ([email protected])| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/~karl | T1's from $600 monthly to FULL DS-3 Service | NEW! K56Flex modem support is now available Voice: [+1 312 803-MCS1 x219]| 56kbps DIGITAL ISDN DOV on analog lines! Fax: [+1 312 803-4929] | 2 FULL DS-3 Internet links; 400Mbps B/W Internal
|