Here's an easy one

Here's an easy one

[Andrew Kelly]

..or at least I assume it is and I just can't thinks straight
with this head cold.

Hi all; quick hostname question:

When mail is sent to a local user (mail -s "bla" user < file)
it's passed to the MTA as user@localhost. The same is passed
as the From address when the vacation program is run by user.

So where does the localhost expansion take place?

My problem here is that I'm getting 
	user@host.domain.name
when what I want is
	user@domain.name

I'm flying RH 7.2 and Sendmail 8.12.5 (patched) on this
particular box, by the way.

Sendmail -d0.1 -bt </dev/null gives me these responses
============ SYSTEM IDENTITY (after readcf) ============
      (short domain name) $w = host
  (canonical domain name) $j = host.domain.name
         (subdomain name) $m = domain.name
              (node name) $k = host
========================================================

which I keep reading as exactly what I want.

When I send mail from an application, be it Pine from a 
console or Netscape from a GUI, everything is as I'd hope.
My mail goes off as me@domain.name
If I send it from the command line with, say,
mail -s "blaaaa" address < file, or
senmail user <file it goes off as
me@host.domain.name

In my sendmail.cf 
host.domain.name is listed nowhere,
only, domain.name

I'm choking on this one and I know I shouldn't be. It's
like wondering why $var = 1 is not doing what it should
and 2 days of debugging hasn't helped and it only takes
a fresh pair of eyes 5 seconds to see that you really
meant $var == 1

...making me crazy.


Can anybody hold my hand?

Andrew

RE: Here's an easy one

[Tim Gildersleeve]

If you are using Sendmail, then this can be sorted out using the
masquerading options.   You can tell the sendmail server to masquerade
certain domains (or hosts) as a different one.   For example,

Host1.domain.com
Host2.domain.com

Can both be masqueraded as domain.com.

I cant remember the options you need to use in the /etc/mail/sendmail.cf
file, but if you have webmin installed then you can set it from there - its
much easier.

 -----Original Message-----
From: 	Andrew Kelly [mailto:akelly@transparency.org] 
Sent:	20 March 2003 13:55
To:	Linux Admin
Subject:	Here's an easy one


..or at least I assume it is and I just can't thinks straight
with this head cold.

Hi all; quick hostname question:

When mail is sent to a local user (mail -s "bla" user < file)
it's passed to the MTA as user@localhost. The same is passed
as the From address when the vacation program is run by user.

So where does the localhost expansion take place?

My problem here is that I'm getting 
	user@host.domain.name
when what I want is
	user@domain.name

I'm flying RH 7.2 and Sendmail 8.12.5 (patched) on this
particular box, by the way.

Sendmail -d0.1 -bt </dev/null gives me these responses
============ SYSTEM IDENTITY (after readcf) ============
      (short domain name) $w = host
  (canonical domain name) $j = host.domain.name
         (subdomain name) $m = domain.name
              (node name) $k = host
========================================================

which I keep reading as exactly what I want.

When I send mail from an application, be it Pine from a 
console or Netscape from a GUI, everything is as I'd hope.
My mail goes off as me@domain.name
If I send it from the command line with, say,
mail -s "blaaaa" address < file, or
senmail user <file it goes off as
me@host.domain.name

In my sendmail.cf 
host.domain.name is listed nowhere,
only, domain.name

I'm choking on this one and I know I shouldn't be. It's
like wondering why $var = 1 is not doing what it should
and 2 days of debugging hasn't helped and it only takes
a fresh pair of eyes 5 seconds to see that you really
meant $var == 1

...making me crazy.


Can anybody hold my hand?

Andrew
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Re: Here's an easy one

[Jon Fullmer]

It sounds to me like you would want to masquerade your domain in your
sendmail configuration.  If you add these lines to your mc file:

MASQUERADE_AS(domain.name)dnl
FEATURE(`masquerade_envelope')dnl

And build a new sendmail.cf file, that should do it. The thing to remember
here then is that ALL e-mail being sent by sendmail on this host will send
mail as "@domain.name".  That sounds like what you want, though.

Hope this helps.

 - Jon

on 3/20/03 6:55 AM, Andrew Kelly at akelly@transparency.org wrote:

> 
> ..or at least I assume it is and I just can't thinks straight
> with this head cold.
> 
> Hi all; quick hostname question:
> 
> When mail is sent to a local user (mail -s "bla" user < file)
> it's passed to the MTA as user@localhost. The same is passed
> as the From address when the vacation program is run by user.
> 
> So where does the localhost expansion take place?
> 
> My problem here is that I'm getting
> user@host.domain.name
> when what I want is
> user@domain.name
> 
> I'm flying RH 7.2 and Sendmail 8.12.5 (patched) on this
> particular box, by the way.
> 
> Sendmail -d0.1 -bt </dev/null gives me these responses
> ============ SYSTEM IDENTITY (after readcf) ============
>     (short domain name) $w = host
> (canonical domain name) $j = host.domain.name
>        (subdomain name) $m = domain.name
>             (node name) $k = host
> ========================================================
> 
> which I keep reading as exactly what I want.
> 
> When I send mail from an application, be it Pine from a
> console or Netscape from a GUI, everything is as I'd hope.
> My mail goes off as me@domain.name
> If I send it from the command line with, say,
> mail -s "blaaaa" address < file, or
> senmail user <file it goes off as
> me@host.domain.name
> 
> In my sendmail.cf
> host.domain.name is listed nowhere,
> only, domain.name
> 
> I'm choking on this one and I know I shouldn't be. It's
> like wondering why $var = 1 is not doing what it should
> and 2 days of debugging hasn't helped and it only takes
> a fresh pair of eyes 5 seconds to see that you really
> meant $var == 1
> 
> ...making me crazy.
> 
> 
> Can anybody hold my hand?
> 
> Andrew
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: Here's an easy one

[Andrew Kelly]

Jon Fullmer wrote:
> 
> It sounds to me like you would want to masquerade your domain in your
> sendmail configuration.  If you add these lines to your mc file:

My thanks to you and to Tim Gildersleeve who answered much 
as you did. I appreciate your help, both of you.

Unfortunately, I forgot to mention that I also already have
masquerading in place and it seems to be working fine, at
least as long as I use an application to send mail.

That's what's got me so baffled. Everything I'm looking at tells
me I've configured what's supposed to be configured and
it even functions. Until I start sending from a bit closer
to the command line.

I could really just let it all slide but for the mail
being sent from the vacation program.

Andrew

Re: Here's an easy one

[Adam T. Bowen]

> Jon Fullmer wrote:
> > 
> > It sounds to me like you would want to masquerade your domain in your
> > sendmail configuration.  If you add these lines to your mc file:
> 
> My thanks to you and to Tim Gildersleeve who answered much 
> as you did. I appreciate your help, both of you.
> 
> Unfortunately, I forgot to mention that I also already have
> masquerading in place and it seems to be working fine, at
[snip]

Are you sending the test mails from the mail server or from a nullclient
style machine?  If not from the server, what is the configuration of
sendmail on this machine?  Does it use a 'smart host'?  Does it handle
local mail differently?

Could you post the full headers of a correctly and incorrectly masqueraded
email?

Cheers

Adam Bowen

Re: Here's an easy one

[Andrew Kelly]

"Adam T. Bowen" wrote:
> 
> > Jon Fullmer wrote:
> > >
> > > It sounds to me like you would want to masquerade your domain in your
> > > sendmail configuration.  If you add these lines to your mc file:
> >
> > My thanks to you and to Tim Gildersleeve who answered much
> > as you did. I appreciate your help, both of you.
> >
> > Unfortunately, I forgot to mention that I also already have
> > masquerading in place and it seems to be working fine, at
> [snip]
> 
> Are you sending the test mails from the mail server or from a nullclient
> style machine?  If not from the server, what is the configuration of
> sendmail on this machine?  Does it use a 'smart host'?  Does it handle
> local mail differently?
> 
> Could you post the full headers of a correctly and incorrectly masqueraded
> email?
> 
> Cheers
> 
> Adam Bowen
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
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-- 
Andrew Kelly
IT
Transparency International
Otto-Suhr-Allee 97/99
10585 Berlin, Germany
Tel: +4930 3438 2026, Fax: +4930 3470 3912
AKelly@transparency.org

Re: Here's an easy one

[Andrew Kelly]

Oops, sorry about that. I'm sick, you know...

"Adam T. Bowen" wrote:

> Are you sending the test mails from the mail server or from a nullclient
> style machine?  If not from the server, what is the configuration of
> sendmail on this machine?  Does it use a 'smart host'?  Does it handle
> local mail differently?

I'm sending from the server itself, and at the moment I'm 
starting to wonder if it's a my hosts file getting in the
way.

I even tried to fix things with a domaintable but it's
not playing.

Andrew

Re: Here's an easy one

[Adam T. Bowen]

> I'm sending from the server itself, 

Are you using the MUAs on the server too?  Those headers would really 
help.  If you don't want to send them to the list (faffing around masking 
ips and hostnames) you can send them direct.

> it's a my hosts file getting in the way.

Tee-hee.  That reminds me of a song :

What's a matta you, hey!
Gotta no respect, hey!
What do you think you do, hey!
Why you look-a so sad, hey!
It's a my hosts file, hey!
Getting in the way!
Ah, shaddap you face

Remember?  Joe Dolce?  Er ... right then ... neither do I, honest.  Must 
have been a seizure or something.

Adam

Re: Here's an easy one

[Glynn Clements]

Andrew Kelly wrote:

> > It sounds to me like you would want to masquerade your domain in your
> > sendmail configuration.  If you add these lines to your mc file:
> 
> My thanks to you and to Tim Gildersleeve who answered much 
> as you did. I appreciate your help, both of you.
> 
> Unfortunately, I forgot to mention that I also already have
> masquerading in place and it seems to be working fine, at
> least as long as I use an application to send mail.
> 
> That's what's got me so baffled. Everything I'm looking at tells
> me I've configured what's supposed to be configured and
> it even functions. Until I start sending from a bit closer
> to the command line.

Masquerading only converts specific domains, so user@host.domain.name
will get converted to user@domain.name, but user@localhost won't.
Try using:

	MASQUERADE_DOMAIN(`localhost')

However, the real issue is: why is mailx (or whatever) creating names
of the form user@localhost? Is the box using "localhost" as its
hostname (what does the "hostname" command say)? It shouldn't be.

-- 
Glynn Clements <glynn.clements@virgin.net>

Re: Here's an easy one

[davidgn]

Then try a little closer to sendmail. Do a telnet to sendmail's port, read 
SMTP's rfc, as i dont know it by heart, and that may show whats going on.

just my two coins.

Re: Here's an easy one

[Jon Fullmer]

The command line really shouldn't make any difference.  I've got
masquerading configured on a couple of servers and I can manually send
e-mails using either the "mail" command or even the "sendmail" command, and
it successfully masquerades them.

I can offer you this, though.  Are you sending these command line messages
as "root"?  If so, there is a default setting on most sendmail
configurations to masquerade every host and every user EXCEPT root.  I
haven't figured out where to add this to the sendmail.mc file, but I can
tell you what to do with the sendmail.cf file.  It's a line that typically
reads:

C{E}root

This line tells sendmail to masquerade everything except mail sent from the
root user.  You can simply comment this line out:

#C{E}root

You might also check to see if you have any "EXPOSED_USER" settings in your
sendmail.cf file.  This function defines specific users that should NOT be
masqueraded. 

Hope that helps.

 - Jon

on 3/20/03 7:16 AM, Andrew Kelly at akelly@transparency.org wrote:

> 
> 
> Jon Fullmer wrote:
>> 
>> It sounds to me like you would want to masquerade your domain in your
>> sendmail configuration.  If you add these lines to your mc file:
> 
> My thanks to you and to Tim Gildersleeve who answered much
> as you did. I appreciate your help, both of you.
> 
> Unfortunately, I forgot to mention that I also already have
> masquerading in place and it seems to be working fine, at
> least as long as I use an application to send mail.
> 
> That's what's got me so baffled. Everything I'm looking at tells
> me I've configured what's supposed to be configured and
> it even functions. Until I start sending from a bit closer
> to the command line.
> 
> I could really just let it all slide but for the mail
> being sent from the vacation program.
> 
> Andrew
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>