From owner-freebsd-isp Thu Aug 9 6: 9: 7 2001 Delivered-To: freebsd-isp@freebsd.org Received: from web20101.mail.yahoo.com (web20101.mail.yahoo.com [216.136.226.38]) by hub.freebsd.org (Postfix) with SMTP id 1FEAE37B401 for ; Thu, 9 Aug 2001 06:09:03 -0700 (PDT) (envelope-from freefabri@yahoo.it) Message-ID: <20010809130902.66148.qmail@web20101.mail.yahoo.com> Received: from [193.227.212.161] by web20101.mail.yahoo.com; Thu, 09 Aug 2001 15:09:02 CEST Date: Thu, 9 Aug 2001 15:09:02 +0200 (CEST) From: =?iso-8859-1?q?Fabrizio=20Ravazzini?= Subject: Re: SMTP very very slow! To: freebsd-isp@freebsd.org In-Reply-To: <20010809083835.C30948@wjv.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit 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 I'll better check the names resolving, I put the names of the 3 machines in /etc/hosts and the default route is the gateway OpenBSD connected to Internet with ppp. But why are the other services such as telnet,ftp,imap,webmail so fast? -- Bill Vermillion ha scritto: > On Thu, Aug 09, 2001 at 02:06:15PM +0200, Fabrizio > Ravazzini thus sprach: > > I tried to telnet on the port 25 of the FreeBSD > box > > but the daemon hanged me there for several minutes > and > > then answered and all worked ok. > > This also for the pop3, when I try to poll the > FreeBSD > > machine I have to wait several minutes to get an > > answer, but after that all works well. > > Slow ftp/telnet/xxx seems to be one of the most > frequently asked > questions on any Unix related group I've seen and it > all boils > down to three letters DNS. > > The far side agents try to authenticate the name by > looking up from > the IP they get. If there is no reverse mapping - > it can take well > over a minute to search all their namesevers for a > possible match - > then it will 1) let you login or 2) reject you > completely - and a > great many sites will reject you if you can be > authenticated. > > You can control the DNS for your machines. Make > sure everthing is > correct AND that whereever you get service from is > properly > reversing your names. If not change providers - > like I had to. > > -- > Bill Vermillion - bv @ wjv . com ______________________________________________________________________ Do You Yahoo!? Il tuo indirizzo gratis e per sempre @yahoo.it su http://mail.yahoo.it To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message