On Mon, 2008-04-21 at 14:37 +1000, Mary Gardiner wrote:
> I wasn't clear in my original mail: I'm more interested in how people
> get their laptop to switch mail settings between "inside horrible
> network" and "normal operation" than I am in specifically what their
> inside-horrible-network settings are, because in this particular case I
> can use the university's mail server to get mail out (and I also have an
> SSH server on my own machine listening on 443, so if I couldn't I could
> do various SSH tunneling). It's just annoying to have to remember to
> re-configure my mail client (in this case, actually Postfix, but similar
> problems apply to any client, whether full MTA or not) when I am located
> at uni, and again when I leave.
Using postconf -e
An example script (probably broken) that I used to run on my laptop:
if (( `id -u` != 0 )); then { echo "Sorry, must be root. Exiting...";
exit; } fi
postconf -e "defer_transports = "
postconf -e "relayhost = "
postconf -e "transport_maps = "
# check if eth0 not up - send email later (TODO: handle ppp0 for evdo)
myip=`ip a sh eth0 | grep 'inet\>'`
if [ -z "$myip" ] ; then
postconf -e "defer_transports = smtp"
postfix reload
postfix flush
exit 0
fi
# if we're at home, send email instantly using sandia as relay
myip=`ip a sh eth0 | grep 'inet\>' | awk '{print $2}'`
if [ $myip = "192.168.1.1/24" ] ; then
postconf -e "relayhost = [192.168.1.254]:25"
postfix reload
postfix flush
exit 0
fi
# if we're on didata staff network, relay POE email via
sydmta.POE.com.au
myip=`ip a sh eth0 | grep 'inet\>'| awk '{print $2}' | awk -F. '{print
$1 "." $2}'`
if [ $myip = "148.182" ] ; then
postconf -e "relayhost = [sydmta.POE.com.au]:25"
# TODO: work out bug in transport map & combine with ssh tunnel
#postconf -e "transport_maps = hash:/etc/postfix/transport"
postfix reload
postfix flush
exit 0
fi
# otherwise, just defer transport (until I implement ssh tunnel)
# including 10.172.x.y addresses (when on classroom net) - can't relay
via sydmta
postconf -e "defer_transports = smtp"
postfix reload
postfix flush
exit 0
# TODO bring up ssh tunnel
# otherwise, just use ssh tunnel
#postconf -e "relayhost = [127.0.0.1]:2525"
#postfix reload
#postfix flush
#exit 0
--
Thanks,
Sonia Hamilton
http://soniahamilton.wordpress.com
http://www.linkedin.com/in/soniahamilton
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