I want to redirect all the outgoing traffic on port 80 to force it to go through the proxy held at messagelabs. At the moment the rdr rule looks like
rdr on $int_if proto tcp from any to any port http -> 22.214.171.124 port 3128
This doesn't work. I actually am a bit confused by what that does - if the proxy is not in the browser configuration then all pages fail. If the proxy is in the configuration then it works.
Can anyone suggest how this ought to work with pf on openbsd?