Date: Thu, 9 Aug 2001 15:09:02 +0200 (CEST) From: =?iso-8859-1?q?Fabrizio=20Ravazzini?= <freefabri@yahoo.it> To: freebsd-isp@freebsd.org Subject: Re: SMTP very very slow! Message-ID: <20010809130902.66148.qmail@web20101.mail.yahoo.com> In-Reply-To: <20010809083835.C30948@wjv.com>
next in thread | previous in thread | raw e-mail | index | archive | help
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 <bill@wjv.com> 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010809130902.66148.qmail>