How to get mail to local destinations delivered?

[Tony Nelson]

At 4:49 PM +0000 11/10/07, Chris G wrote:
>I have a fairly default Fedora 7 installation, certainly the sendmail
>is just as it was installed.
>
>How do I get sendmail to deliver mail to local destinations?  The
>system's hostname is home.isbd.net and it's connected to the Internet
>via a router.  I have a CNAME set up at the hosting provider that
>hosts isbd.net to point at the static address of my ADSL connection.
>
>When I send mail from my system to a local address it gets the
>hostname added, thus mail gets sent to root at home.isbd.net,
>postmaster at home.isbd.net, chris at home.isbd.net, etc.  All of this
>fails because sendmail attempts to connect to the SMTP port of
>home.isbd.net, which isn't possible because my router's firewall
>doesn't accept connections on port 25.
>
>I don't want to open up port 25 and it seems a bit silly anyway to
>send mail on such a long round trip.  Is there any way I can tell
>sendmail that home.isbd.net is localhost (or 192.168.1.1)?  I have an
>entry for home.isbd.net in my /etc/hosts file which is:-
>
>    192.168.1.1     home    home.isbd.net
>
>but obviously sendmail is doing a DNS lookup for home.isbd.net which
>returns the 'external' IP address.

You didn't show your entire /etc/hosts file.  Does it start with:

    127.0.0.1    localhost localhost.localdomain

with the 192.x.x.x line after it?
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