Marc So what happens if you run a local nameserver in caching mode? You may find this reduces the DNS related query time (and for that matter overall SA processing) dramitcally).
-- Martin Hepworth Snr Systems Administrator Solid State Logic Tel: +44 (0)1865 842300 > -----Original Message----- > From: Marc Perkel [mailto:[EMAIL PROTECTED] > Sent: 28 August 2008 16:41 > To: users@spamassassin.apache.org > Subject: Handy script for generating /etc/resolv.conf > > Here's something I threw together to make sure the > /etc/resolv.conf points to a working nameserver. I run this > once a minute. It checks to see what name servers are up and > creates /etc/resolv.conf. As you all know SA and mail servers > need the first nameserver to always be working. > > #!/bin/bash > > # This program is run once a minute and automatically > generates the /etc/resolv.conf file > > DEFAULTSERVERS="65.49.42.30 65.49.42.31 65.49.42.33 69.50.231.141" > > # If default isn't optimum then read > /etc/sysconfig/local-servers for list > > [ -f /etc/sysconfig/local-nameservers ] && . > /etc/sysconfig/local-nameservers > > echo "# Automatically generated by $0" > /etc/resolv.tmp echo > >> /etc/resolv.tmp echo "domain ctyme.com" >> /etc/resolv.tmp > echo >> /etc/resolv.tmp > > for ns in $LOCALNAMESERVERS $DEFAULTSERVERS; do > /usr/bin/nc -w 3 -z $ns 53 | cut -d \ -f 3 | sed -e > 's/^.*$/nameserver \0/' >> /etc/resolv.tmp done > > # resolv.conf only allows 3 nameservers so truncate list to 7 lines > > head -n 7 /etc/resolv.tmp > /etc/resolv.conf rm /etc/resolv.tmp > ********************************************************************** Confidentiality : This e-mail and any attachments are intended for the addressee only and may be confidential. If they come to you in error you must take no action based on them, nor must you copy or show them to anyone. Please advise the sender by replying to this e-mail immediately and then delete the original from your computer. Opinion : Any opinions expressed in this e-mail are entirely those of the author and unless specifically stated to the contrary, are not necessarily those of the author's employer. Security Warning : Internet e-mail is not necessarily a secure communications medium and can be subject to data corruption. We advise that you consider this fact when e-mailing us. Viruses : We have taken steps to ensure that this e-mail and any attachments are free from known viruses but in keeping with good computing practice, you should ensure that they are virus free. Red Lion 49 Ltd T/A Solid State Logic Registered as a limited company in England and Wales (Company No:5362730) Registered Office: 25 Spring Hill Road, Begbroke, Oxford OX5 1RU, United Kingdom **********************************************************************
