From owner-freebsd-questions@FreeBSD.ORG Fri Jul 1 22:19:04 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3365E16A41C for ; Fri, 1 Jul 2005 22:19:04 +0000 (GMT) (envelope-from matt@atopia.net) Received: from neptune.atopia.net (neptune.atopia.net [209.128.231.90]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0BF7943D1D for ; Fri, 1 Jul 2005 22:19:04 +0000 (GMT) (envelope-from matt@atopia.net) Received: by neptune.atopia.net (Postfix, from userid 1001) id 82181413F; Fri, 1 Jul 2005 18:19:03 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by neptune.atopia.net (Postfix) with ESMTP id 8046C4120 for ; Fri, 1 Jul 2005 18:19:03 -0400 (EDT) Date: Fri, 1 Jul 2005 18:19:03 -0400 (EDT) From: Matt Juszczak To: freebsd-questions@freebsd.org Message-ID: <20050701181347.N14065@neptune.atopia.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: Lock up problems fixed??? not sure... 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: Fri, 01 Jul 2005 22:19:04 -0000 Hi all, Well, after removing IPF and having a week of stability, we decided to put our mail server to the test. I began flooding it with tons of mail messages using smtp-source at about 2 pm today. The server load jumped up to about 4.50 average. It eventually started denying requests, but after waiting a few minutes, it would accept them again (I was literally flooding it, I sent in all 1.2 million emails). I wrote a scipt to hammer it, so even after it would refuse the connection, it would hammer it again. Eventually, the machine started to not respond. I could ping it with successful replies, but could not SSH into it. The last message on the screen was "Could not write to /var/mail/thissucks", which was the account we were testing. I rebooted the machine, and all is fine. I'm not sure if this is still a sign of instability, or if this is a "Any idiot who would sent 1.2 million emails and a full flood for hours to a mail server should expect something like this to happen" message. Any input? Thanks! -Matt