Date: Tue, 6 Apr 1999 13:37:57 -0500 From: Alan Weber <aaweber@austin.rr.com> To: Phil Wang <Phil.Wang@wizeup.com> Cc: questions@freebsd.org Subject: Re: FreeBSD server too slow for internals Message-ID: <19990406133756.A728@austin.rr.com> In-Reply-To: <370933AB.28F5D255@wizeup.com>; from Phil Wang on Mon, Apr 05, 1999 at 06:05:31PM -0400 References: <353CD4ED.37E7FCFA@wizeup.com> <370933AB.28F5D255@wizeup.com>
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On Mon, Apr 05, 1999 at 06:05:31PM -0400, Phil Wang wrote: --> Hi all, --> I got a strange problem with my FreeBSD 2.2.5 machine, which is used as --> mail/pop3, ftp and httpd servers. Two network interface cards are --> installed on it, one is used to connect Internet, another is to connect --> an internal network. All machines (PC and MACs) internal network use --> NATD to do external access. --> This morning, we found at first that a pop3 client took more than 5 --> minutes to download emails from this pop3 server (sometimes failed), and --> later found that ftp and httpd services did too. It was very quick last --> Thursday, this machine was not turned down during the following --> holidays. --> But it looks no slow to access those servers from external Internet or --> access Internet from internal machines. So, what is the problem? --> I checked all the logs outputed from system processes, only one message --> repeated several times in /var/log/message may be useful. --> <First appeared> --> Apr 2 11:08:19 wizeup natd: failed to write packet back (Permission --> denied) --> Apr 2 11:08:49 wizeup natd: failed to write packet back (Permission --> denied) --> Apr 2 11:10:54 wizeup last message repeated 4 times --> Apr 2 11:13:10 wizeup last message repeated 4 times --> Apr 2 11:13:21 wizeup popper[11123]: (v2.4b2) Unable to get canonical --> name of c --> lient, err = 0 This looks like the server can not find itself in the DNS system. If your local DNS is not working, then all of the connections could take a long time. Unable to get cannonical name of client indicates to me that the reverse dns ip number to name lookup is not working. --> Does any body help it? --> Thanks, --> Phil --> --> To Unsubscribe: send mail to majordomo@FreeBSD.org --> with "unsubscribe freebsd-questions" in the body of the message -- When I was a kid I had to rub sticks together to multiply and divide numbers. A calculator was a job description. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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