How to get mail to local destinations delivered?

[John Summerfield]

Chris G wrote:

.lan is very like your home.isbd.net, and that alias works
>> here. And I can send to summer at localhost.
>>
>> A remaining difference I can think of is that I'm using DNS as I described 
>> a while ago.
>>
>> You are using a DNS (for outside users) and your hosts files, for computers 
>> in the same domain. This is a setup I mostly avoid. I do do that for 
>> herakles.homelinux.org, and incoming email addressed to addresses in that 
>> domain get relayed inside my home network to another system, and for that I 
>> need my own DNS with different information from the public DNS.
>>
> There is *no* incoming mail or outgoing mail, I read my mail elsewhere
> by connecting to a remote system using ssh.  All I want is to be able
> to see mail sent to root on the local system so I can monitor it.

This doesn't prevent it from being confused.
> 
>> I prefer postfix, I find it easier.
>>
> When I ran a mail server on this system I too used postfix, *much*
> easier to configure.  But now I don't want any sort of mail server
> except to get the local delivery of root mail.
>> ps
>> Please run this test and post the results:
>> telnet home.isbd.net 25
>> ehlo fred
>> quit
>>
> Where from?  It's not going to work from most places because the
> firewall doesn't allow connections on port 25, this system isn't
> intended to accept any mail from outside.

Whereever it works. It will tell us sendmail's idea of the host name.

Like this:

[root at potoroo mail]# telnet 127.0.0.1 25
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
220 potoroo.demo.lan ESMTP Sendmail 8.14.1/8.14.1; Mon, 12 Nov 2007 
20:50:08 +0900
ehlo potoroo.demo.lan
250-potoroo.demo.lan Hello localhost.localdomain [127.0.0.1], pleased to 
meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH DIGEST-MD5 CRAM-MD5
250-DELIVERBY
250 HELP
quit
221 2.0.0 potoroo.demo.lan closing connection
Connection closed by foreign host.
[root at potoroo mail]#


If this happens,
[root at potoroo mail]# telnet potoroo.demo.lan 25
Trying 192.168.9.138...
telnet: connect to address 192.168.9.138: Connection refused
[root at potoroo mail]#

then telnet as in the first example.

-- 

Cheers
John

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