From owner-freebsd-security Thu Feb 14 7:46: 7 2002 Delivered-To: freebsd-security@freebsd.org Received: from R181172.resnet.ucsb.edu (R181172.resnet.ucsb.edu [128.111.181.172]) by hub.freebsd.org (Postfix) with ESMTP id DE64937B400 for ; Thu, 14 Feb 2002 07:46:05 -0800 (PST) Received: from localhost (mudman@localhost) by R181172.resnet.ucsb.edu (8.11.6/8.11.6) with ESMTP id g1EFqai52691 for ; Thu, 14 Feb 2002 07:52:36 -0800 (PST) (envelope-from mudman@R181172.resnet.ucsb.edu) Date: Thu, 14 Feb 2002 07:52:35 -0800 (PST) From: Dave To: freebsd-security@freebsd.org Subject: sendmail ; bogus letters Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Some of my accounts are getting some spam (what else is new on the internet?). However, the "from" addresses of these letters are not even valid (as is with a lot of spam). In a couple of cases they are, but I question the letter actually came from the sender listed. Is there something I can do in the sendmail.cf file or other configuration change to drop these kinds of letters? Other solutions? I've thought of denying messages from free mail sites, but I imagine some spam is from elsewhere. I would think it is possible to ditch bulkmail, I know that yahoo.com has a bulkmail folder -- and I heard yahoo runs FreeBSD too :) How are the letters discriminated from eachother as a bulk versus a possible real one? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message