Alton Yu wrote:
> zburnham@gmail.com wrote:
> > Mail that I'm sending from a local machine is having its messages
> > heavily filtered due to the appearance of localhost.localdomain in the
> > headers, like so:
> >
> > Received: from localhost (localhost [127.0.0.1])
> > by my.isp.com (Postfix) with SMTP id 27EA22BA82
> > for <user@my.isp.com>; Wed, 30 Aug 2006 16:58:28 -0400
> > (EDT)
> >
> > then later on
> >
> > Received: from dev.gspx.com (unknown [70.91.140.234])
> > by my.isp.com (Postfix) with ESMTP id D4C132BA3F
> > for <user@my.isp.com>; Wed, 30 Aug 2006 16:58:27 -0400
> > (EDT)
> > Received: from localmachine.mydomain.tld (localhost.localdomain
> > [127.0.0.1])
> > by localmachine.mydomain.tld (8.13.7/8.13.7) with ESMTP id
> > k7UL5mcg030013
> > for <user@my.isp.com>; Wed, 30 Aug 2006 17:05:48 -0400
> > Received: (from myusername@localhost)
> > by localmachine.mydomain.tld (8.13.7/8.13.7/Submit) id
> > k7UL5mF8030012
> > for user@my.isp.com; Wed, 30 Aug 2006 17:05:48 -0400
> >
> > In searching the archives I've seen that localhost.localdomain issues
> > can be caused by an improperly configured /etc/hosts. My /etc/hosts
> > now looks like this (the above headers came from a message sent when
> > localhost.localdomain was still in the 127.0.0.1 line):
> >
> > # Do not remove the following line, or various programs
> > # that require network functionality will fail.
> > 127.0.0.1 localhost
> > 10.1.10.140 localmachine.mydomain.tld localmachine
> >
> > This machine sits behind a NAT router which is assigned a static IP.
> > There is an A record set up in DNS to point to the IP assigned to the
> > router, represented here by "localmachine.mydomain.tld".
> >
> > Sendmail can see the domain name, as attested to by the following:
> >
> > $ sendmail -bt -d0 </dev/null
> > Version 8.13.7
> > Compiled with: DNSMAP HESIOD HES_GETMAILHOST LDAPMAP LOG MAP_REGEX
> > MATCHGECOS MILTER MIME7TO8 MIME8TO7 NAMED_BIND NETINET
> > NETINET6
> > NETUNIX NEWDB NIS PIPELINING SASLv2 SCANF SOCKETMAP
> > STARTTLS
> > TCPWRAPPERS USERDB USE_LDAP_INIT
> >
> > ============ SYSTEM IDENTITY (after readcf) ============
> > (short domain name) $w = localmachine
> > (canonical domain name) $j = localmachine.mydomain.tld
> > (subdomain name) $m = mydomain.tld
> > (node name) $k = localmachine.mydomain.tld
> > ================================================== ======
> >
> > I'm a real newbie when it comes to sendmail, so any would be
> > greatly appreciated.
> >
>
> It's just what's set in your /etc/hosts file.

What is what's set in my /etc/hosts?

I'm sorry I don't understand. Should I not have an entry for
localhost.localdomain? Should I modify what is in there? Should I put
my router's external IP in /etc/hosts as well?

zburnham@gmail.com wrote:
> Alton Yu wrote:

>>> I'm a real newbie when it comes to sendmail, so any would be
>>> greatly appreciated.
>>>
>> It's just what's set in your /etc/hosts file.
>
> What is what's set in my /etc/hosts?

cat /etc/hosts
and post the result here

> I'm sorry I don't understand. Should I not have an entry for
> localhost.localdomain?

Of course you should.


//Aho

J.O. Aho wrote:
> zburnham@gmail.com wrote:
> > Alton Yu wrote:
>
> >>> I'm a real newbie when it comes to sendmail, so any would be
> >>> greatly appreciated.
> >>>
> >> It's just what's set in your /etc/hosts file.
> >
> > What is what's set in my /etc/hosts?
>
> cat /etc/hosts
> and post the result here
>
> > I'm sorry I don't understand. Should I not have an entry for
> > localhost.localdomain?
>
> Of course you should.
>
>
> //Aho

$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost
10.1.10.140 localmachine.domain.tld localmachine

Obviously obfuscated. The machine is behind a NAT router and does not
contact the Internet correctly.

"J.O. Aho" <user@example.net> writes:

> > I'm sorry I don't understand. Should I not have an entry for
> > localhost.localdomain?
>
> Of course you should.

Well traditionally

127.0.0.1 is localhost NOT localhost.localdomain

Only linux puts localhost.localdomain on here ...

Kari Hurtta wrote:

> 127.0.0.1 is localhost NOT localhost.localdomain
> Only linux puts localhost.localdomain on here ...

I would make a point to specify that only some Linux distributions use
"localhost.localdomain"; not all do. (Slackware doesn't.) (admittedly
not relevant to the topic ...)

--
----------------------------------------------------------------------
Sylvain Robitaille syl@alcor.concordia.ca

Systems and Network analyst Concordia University
Instructional & Information Technology Montreal, Quebec, Canada
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