Date: Thu, 05 Jun 1997 11:54:09 +0100 From: Robin Melville <robmel@nadt.org.uk> To: sweeting@neuronet.com.my, freebsd-isp@FreeBSD.ORG Subject: Re: help pls : how to optimise mail server response Message-ID: <1.5.4.32.19970605105409.0071aff8@wrcmail>
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At 04:39 05/06/97 +0800, sweeting@neuronet.com.my wrote: >The problem is that they are having a lot of difficulty >collecting mail from the mailhub I set up for them >on a P166 FreeBSD box with 64 MB RAM. >Een over a LAN, when I ping the FreeBSD box, the very >first request _always_ times out. >(Almost as if the machine is waking up) > >So, the only causes of trouble I can think of are : > >1) network card. (it's a 3Com). > which do you all recommend ? Not impossible. I've had strange timeout problems on first connect with 3Coms, but the "_always_" part makes me uncertain about this. >2) DNS - is handled by a DEC Alpha 500 (runnign DU) which is > possibly in need of RAM (it's handling mail, and 4 webservers, X term, > and DNS for 50 domains.... somebody once told me that each domain > should have 1 MB RAM.) This seems quite likely. I would definitely move your DNS to the FBSD box, or at the very least set up a cacheing slave to your existing one.. >3) Jammed network at the ISP Not impossible ;-) but this isn't likely because you're getting the same problem on your LAN. >4) I configured it inefficiently (config files below) We'd need to see /etc/hosts.conf and /etc/resolv.conf on the FBSD host for clues about whether the DNS is to blame. Regards, Robin. -------------------------------------------------------- Robin Melville, Addiction & Forensic Information Service Nottingham Alcohol & Drug Team (Extn. 49178) Vox: +44 (0)115 952 9478 Fax: +44 (0)115 952 9421 Email: robmel@nadt.org.uk WWW: http://www.innotts.co.uk/nadt/ ---------------------------------------------------------
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