From owner-freebsd-isp Thu Mar 19 15:18:06 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA24533 for freebsd-isp-outgoing; Thu, 19 Mar 1998 15:18:06 -0800 (PST) (envelope-from owner-freebsd-isp@FreeBSD.ORG) Received: from horst.bfd.com (horst.bfd.com [204.160.242.10]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA24528 for ; Thu, 19 Mar 1998 15:18:05 -0800 (PST) (envelope-from ejs@bfd.com) Received: from harlie.bfd.com (bastion.bfd.com [204.160.242.14]) by horst.bfd.com (8.8.8/8.8.8) with SMTP id PAA18619; Thu, 19 Mar 1998 15:18:03 -0800 (PST) (envelope-from ejs@bfd.com) Date: Thu, 19 Mar 1998 15:18:03 -0800 (PST) From: "Eric J. Schwertfeger" To: Joe Mays cc: freebsd-isp@FreeBSD.ORG Subject: Re: spam blocking in sendmail In-Reply-To: <3511A033.6A780275@launchpad.win.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, 19 Mar 1998, Joe Mays wrote: > On a related note: I just ran into an issue today with > spammers that leads me to a sendmail.cf question. > > Someone out there is generating spam mail (we've encountered > it from more than one domain) that has a blank X-UIDL: > header. This is a real problem for MS Outlook and Outlook > express. When they attempt to download messages from the > pop server which contain this header they hang and give a > pop-server timeout. Netscape has no problem downloading > them, though it may screw up the indexing in the inbox list, > not sure about that yet. I think this can be done with sendmail 8.9 beta, which claims the ability to bounce messages based on headers. Right now I'm /dev/null'ing the messages with procmail. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message