From owner-freebsd-questions@FreeBSD.ORG Sun Apr 29 13:00:42 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 3462216A401 for ; Sun, 29 Apr 2007 13:00:42 +0000 (UTC) (envelope-from mnslinky@gmail.com) Received: from py-out-1112.google.com (py-out-1112.google.com [64.233.166.183]) by mx1.freebsd.org (Postfix) with ESMTP id E662913C489 for ; Sun, 29 Apr 2007 13:00:41 +0000 (UTC) (envelope-from mnslinky@gmail.com) Received: by py-out-1112.google.com with SMTP id f31so1197821pyh for ; Sun, 29 Apr 2007 06:00:41 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:in-reply-to:references:mime-version:x-priority:content-type:message-id:cc:content-transfer-encoding:from:subject:date:to:x-mailer; b=Dz9njkog+TxPJFuUUa3cvJj/+8PrBuguYGMlnILIiwJqz+5vsSiJqhS016DtaXUgWrwTbqDABuxlxexYzUF8z5fR6mSweaMbYImkxQbNzRQAczw3DltdOitSlz+e3tUIpv+8EQT5tHLnZtbimvLv7Q+y09QL4lDXMHcDeLWSwdQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:in-reply-to:references:mime-version:x-priority:content-type:message-id:cc:content-transfer-encoding:from:subject:date:to:x-mailer; b=g80rmlGcLhw66cAnr+jdziHVMT6H6c0PR83+867dwcd5dP4V+0HLqmiqCMXZFp5SCbaVlcH6VvHuijPuFG5l41/ryKw0NEXqJ4iF9t1+xTSr2R3+vGKcUklZo4nsM039+9BR1M4nPb9ZCtJiksrBI6xvkqQgM9pHO+DRZbM4fAs= Received: by 10.35.45.1 with SMTP id x1mr9307921pyj.1177851641342; Sun, 29 Apr 2007 06:00:41 -0700 (PDT) Received: from ?192.168.1.4? ( [209.240.66.157]) by mx.google.com with ESMTP id f24sm3792377pyh.2007.04.29.06.00.39; Sun, 29 Apr 2007 06:00:39 -0700 (PDT) In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v752.3) X-Priority: 3 (Normal) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <0674B8B4-EB98-4876-AB35-51D0FD550680@gmail.com> Content-Transfer-Encoding: 7bit From: Eric Crist Date: Sun, 29 Apr 2007 08:00:37 -0500 To: Ted Mittelstaedt X-Mailer: Apple Mail (2.752.3) Cc: Grant Peel , Christopher Hilton , freebsd-questions@freebsd.org, Bart Silverstrim Subject: Re: Greylisting -- Was: Anti Spam X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Apr 2007 13:00:42 -0000 On Apr 29, 2007, at 4:00 AMApr 29, 2007, Ted Mittelstaedt wrote: > > If the monitoring system notices something down, I have to know about > it within a few minutes. I cannot wait for the mailserver that > sends the > page out to retry sending the page to the cell carrier's mailserver > in an hour. > > Things go down rarely. The moonitoring system is not continually > sending > out pages to my cell phone every day. Many times many months will > pass > in between the monitoring system sending my cell phone a page. If the > cell phone company was running greylisting, any whitelist entry for my > monitoring system would be gone by then. > >> Even if it does take an hour, the fact that it retried the server on >> the other side doing the greylisting means it would be whitelisted >> after a couple mails. > > But the whitelist would have expired by the next time there was a > problem. > >> If you're doing something SO critical that >> three or four mails delayed an hour, until you're establishes as a >> legit user, means life or death, you definitely should be doing >> something that backs up how you communicate with other sites, > > I'm monitoring systems at the ISP I work at. No, it is not life or > death > if a feed goes down for 3 hours and a bunch of people cannot download > their daily freebsd-questions mailing list fix. At least, I don't > think > so. But they do. And as their money that buys the ISP's product puts > the bread on my table, I have to do what they want. And they want > instant > response if there is a problem in the ISP's systems. That won't > happen if > the monitoring system's e-mails that get sent out when there is a > problem > lie around in a mail queue for an hour waiting for a greylist at the > cell company to let the messages through. My ISP has a FreeBSD with a GSM modem with text messaging service. They send actual text messages across the cellular network - instantly. No email required. Perhaps you folks could do that?