Re: Basic hostname question

["Keith G. Murphy" <keithmur@mindspring.com>]

Damon Muller wrote:
> 
> Quoth Anthony Campbell,
> > How are you supposed to form a hostname if you are not on a network but
> > just connect intermittently to an ISP?
> >
> > Unless you have a dotted quad name, some hosts reject emails.
> 
> Basically, you have to make your mails look from the outside like they
> are coming from your ISP.
> 
> How you do this depends a lot on the MTA that you are using. For qmail
> (which I use), it's merely a matter of setting the QMAILHOST and
> QMAILUSER environment variables before you send the email, which sets
> the envelope sender. I'm sure there are equally easy ways to do it using
> other MTAs, but I don't know what they are.

If you are using exim, set 'qualify_domain' in /etc/exim.conf.  If you
are still using smail, stick a domain in /etc/mailname.

Just use your ISP's domain name for these.