From owner-freebsd-isp Thu Nov 7 5: 8:30 2002 Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A7D4837B401 for ; Thu, 7 Nov 2002 05:08:28 -0800 (PST) Received: from ms3.mail2000.com.tw (ms3.mail2000.com.tw [211.72.252.187]) by mx1.FreeBSD.org (Postfix) with SMTP id 9308043E75 for ; Thu, 7 Nov 2002 05:08:27 -0800 (PST) (envelope-from sjs@mail2000.com.tw) Received: from 211.72.252.247 by ms3.mail2000.com.tw with Mail2000 ESMTP Server V2.71M(77847:0:AUTH_RELAY) Thu, 07 Nov 2002 21:08:14 +0800 (CST); (envelope-from ) Received: By OpenMail Mailer;Thu, 07 Nov 2002 21:08:14 +0800 (CST) From: "sjs" Reply-To: sjs@mail2000.com.tw Subject: some TCP ports does not reposnd Message-ID: <1036674493.75116.sjs@mail2000.com.tw> To: "" Date: Thu, 07 Nov 2002 21:08:13 +0800 (CST) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi, We have a very busy webmail service run on several FreeBSD severs. One server does not respond to smtp/http port until timeout recently. The FreeBSD version is 4.5R. When it happens, I use netstat to list the listen queue is full, and exceeds the backlog size which is 128. Also, I use tcpdump to list both ICMP and TCP traffic, but cannot find anything wrong. Once I reboot the server, everything is fine again. When smtp/http port is unavailable, the other ports can still respond normally. Is there any way to list the IPs on listen queue or to fix this problem. Gareth To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message