Thanks. I've incorporated all three suggestions.
> > route_list = * mail.isp.net bydns_a
>
> (1) You shouldn't have bydns_a in that router!
The smarthost router in spec.txt, smart_route, uses bydns_a. The
smarthost router in Debian's eximconfig utility also uses bydns_a. Why the
change here?
(I haven't yet read about DNS so I don't yet understand the
significance of one type of record or the other. Back to the books for
me....)
Regards,
John
------------------------------------------------------------------
On Wed, Sep 15, 1999 at 10:11:24AM +0100, Philip Hazel wrote:
> On Tue, 14 Sep 1999, John Lawless wrote:
>
> > Thanks. I think I've got it then as:
> >
> > local:
> > driver = lookuphost
> > transport = remote_smtp
> > domains = lsearch;/etc/local_hosts.list
> > self = local
> > gethostbyname
>
> You might like to consider adding no_more to that, as another safety
> catch. It will stop any domain that appears in the list but doesn't have
> an address from falling through.
>
> > internet:
> > driver = domainlist
> > domains = !*.internal:^.*\\..*\$
> > transport = remote_smtp
> > route_list = * mail.isp.net bydns_a
> >
> > This tries the local network first, reducing the chance of accidental
> > internet deliveries. From all the discussion on aliases and new internet
> > domains, I added the domains statements to the internet router to stop
> > addresses that look like misspelled aliases (no period) or that look like
> > misspelled internal addresses (*.internal).
>
> Two comments:
>
> (1) You shouldn't have bydns_a in that router! You *must* use MX records
> for delivery to Internet hosts if they exist. There are plenty of
> Internet domains that have only MX records - cam.ac.uk is one. I bet you
> can't mail to ph10@??? using that router. Change it to bydns.
>
> (2) Whenever I see a regular expression these days, I wonder if it can be
> improved. A faster one than yours is
>
> domains = ^[^.]*\\.
>
> which just hunts along for the first period and then stops, saving
> wasted effort on long strings.
>
> --
> Philip Hazel University of Cambridge Computing Service,
> ph10@??? Cambridge, England. Phone: +44 1223 334714.
>
>
