How to get mail to local destinations delivered?

[Chris G]

On Mon, Nov 12, 2007 at 01:33:49PM -0500, Tony Nelson wrote:
> At 1:53 PM +0000 11/12/07, Chris G wrote:
>  ...
> >But mail to home.isbd.net fails.
> 
> Try sending an entire message?  Type the following:
> 
> $ telnet 127.0.0.1 25
> helo localhost.localdomain
> mail from: home at locahost
> rcpt to: root
> data
> test message
> .
> quit
> 
OK, here you go:-

    home$ telnet 127.0.0.1 25
    Trying 127.0.0.1...
    Connected to 127.0.0.1.
    Escape character is '^]'.
    220 home.isbd.net ESMTP Sendmail 8.14.1/8.14.1; Mon, 12 Nov 2007
    19:00:53 GMT
    helo localhost.localdomain
    250 home.isbd.net Hello localhost.localdomain [127.0.0.1], pleased to meet you
    mail from: chris at home.isbd.net
    250 2.1.0 chris at home.isbd.net... Sender ok
    rcpt to: root
    250 2.1.5 root... Recipient ok
    data
    354 Enter mail, end with "." on a line by itself
    This is a message
    and more
    .
    250 2.0.0 lACJ0rrT027280 Message accepted for delivery
    quit
    221 2.0.0 home.isbd.net closing connection
    Connection closed by foreign host.


... and that has been delivered to root.   Similarly mail sent to
'chris' works too.  Huh!?

Just a minute.....

Ah, I'm beginning to understand, mail to 'chris' and 'root' works, but
sendmail would appear to add a hostname to what's sent by an MUA and
anything with a hostname after the username is sent out, which doesn't
work.

-- 
Chris Green