On Thu, Jun 28, 2001 at 07:33:38AM -0700, Rusty Carruth wrote:
> Tom Strickland <[EMAIL PROTECTED]> wrote:
> > Our server is about to be connected to the Internet through a dialup
> > modem. Naive question:
> > Is it OK to give our network/server any old domain name? To the
> > outside world we will be the domain set by our ISP, but can I set the
> > domain in our LAN to something like smith.jones?
>
> It may work, it may not.
>
> A lot depends upon how you set up your mail.
Thanks.
That's what I thought. Running postfix as SMTP, fetchmail to hit POP
boxes at the ISP.
> If you try to send mail to your ISP from [EMAIL PROTECTED], and your
> isp is jones.smith, then your isp will most likely deny you the
> relay that it thinks you are asking for when you try to send email
> to anyone outside the jones.smith (and possibly smith.jones) domain(s).
>
> If, however, you send email directly from your smith.jones side then
> you might (should?) be ok. (But beware - strange things may happen on
> INCOMING email ;-)
We'll be using a domain along the lines of ourcharity.org.uk anyway
(got to buy the domain), with mail forwarding, so we'll have to get
around similar problems. We'll have mail to:
our ISP's accounts
our purchased domain
the local hostname - deliberately totally different from the other 2
domains.
... all of which must be dealt with by Postfix. I assume that it can
cope. I'm also worried about zealous spam filters on mailing lists
detecting an untraceable mailer - that shouldn't be a problem should
it?
> I had a setup like that for a while - I was descomp.phx.inficad.com
> AND descomp.com for a long time, and it worked fine as long as I
> sent email directly out from my descomp.com domain (i.e. I ran
> postfix on descomp.com and IT was a 'smart mailer' (in the old
> sendmail terminology :-) So it can work fine. It helps if you
> set your mailer to accept mail for BOTH domains.....
