From owner-freebsd-questions@FreeBSD.ORG Mon Jun 11 19:04:42 2007 Return-Path: <owner-freebsd-questions@FreeBSD.ORG> 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 1CB2C16A46C for <freebsd-questions@freebsd.org>; Mon, 11 Jun 2007 19:04:42 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from mail-out3.apple.com (mail-out3.apple.com [17.254.13.22]) by mx1.freebsd.org (Postfix) with ESMTP id 0659913C465 for <freebsd-questions@freebsd.org>; Mon, 11 Jun 2007 19:04:41 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from relay7.apple.com (relay7.apple.com [17.128.113.37]) by mail-out3.apple.com (Postfix) with ESMTP id 3F2098881F7; Mon, 11 Jun 2007 12:03:37 -0700 (PDT) Received: from relay7.apple.com (unknown [127.0.0.1]) by relay7.apple.com (Symantec Mail Security) with ESMTP id 975AA30066; Mon, 11 Jun 2007 12:04:41 -0700 (PDT) X-AuditID: 11807125-9ef62bb000000801-8a-466d9cc9ae2a Received: from [17.214.13.96] (cswiger1.apple.com [17.214.13.96]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by relay7.apple.com (Apple SCV relay) with ESMTP id 8D72F300B2; Mon, 11 Jun 2007 12:04:41 -0700 (PDT) In-Reply-To: <466CB2DF.30808@extracktor.com> References: <466CB2DF.30808@extracktor.com> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <9ADFB3BA-F02E-458D-80C1-2F13EAC769EF@mac.com> Content-Transfer-Encoding: 7bit From: Chuck Swiger <cswiger@mac.com> Date: Mon, 11 Jun 2007 12:04:40 -0700 To: Foo JH <jhfoo-ml@extracktor.com> X-Mailer: Apple Mail (2.752.2) X-Brightmail-Tracker: AAAAAA== Cc: freebsd-questions@freebsd.org Subject: Re: Shorten delay in sending mail to SMTP X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions <freebsd-questions.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions> List-Post: <mailto:freebsd-questions@freebsd.org> List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=subscribe> X-List-Received-Date: Mon, 11 Jun 2007 19:04:42 -0000 Hi-- On Jun 10, 2007, at 7:26 PM, Foo JH wrote: > I'm using inetd + qmail to implement a mail server. The combo > works, but usually sending a mail takes some 5-10 seconds. > I suspect it's largely because inetd or qmail is trying to do some > dns lookup or something, before letting it through. Is there any > way to shorten this process - if possible eliminate it altogether? > > Some time back, there was an advice to avoid inetd. It's probably a > good idea, but I hope to deal with this first before moving forward > on the setup. It's certainly possible to disable DNS lookups entirely, and that might help reduce the delay you see, but in that case you'll have to configure qmail to relay all mail to the equivalent of a sendmail SMART_HOST (ie, to your ISP's SMTP relay), which performs MX lookups and so forth instead of your local qmail doing so. It is only recommended to use an MTA spawned from inetd if your traffic volume is very low-- probably well under 1000 messages/day. If your traffic level is higher, you should run your MTA as a daemon and not through inetd. -- -Chuck