sendmail and "sender domain must exist" error

[Reuben D. Budiardja]

On Thursday 17 June 2004 11:01 am, Timothy Stone wrote:
> Rodolfo J. Paiz wrote:
> > At 07:01 6/17/2004, Timothy Stone wrote:
<snip>
> I believe that is my problem. This server is not on the public net here.
>
> It's not a matter of having the network provider adding an MX record, I
> can have that done quickly (I'm in charge of that), its that if I add an
> MX record it's not going to point to a mail server, and that is
> something my network admin won't have/allow, if only for her FUD about
> Linux.
>
> While "harrisburgpa.gov" has a public zone file, it does not have an MX
> record or an A record for "mail" or other such name. Only "www" as those
> servers are the only ones exposed on the public net.
>
> So, how do I turn sendmail into a relay for outgoing mail? Or whatever
> that is called. :)

I am no sendmail expert either (nor am I expert of any kind :) ), but what you 
want is maybe called Smart Host in sendmail ?  Please take a look at that and 
see if that what you want. I think what SmartHost do, it will forward the 
mail to your publicly accessible (real) mail server  or www from your 
internal mail server, which then relay it to the pager host.
Something like:

define(`SMART_HOST',`smtp:smtp.harrisburgpa.gov')dnl in sendmail.mc,

where smtp.harriburgpa.gov is your external / real mail server. 

I am maybe way off, but check on the mailing list archive or google.

RDB

-- 
Reuben D. Budiardja
Department of Physics and Astronomy
The University of Tennessee, Knoxville, TN
---------------------------------------------------------
"To be a nemesis, you have to actively try to destroy 
something, don't you? Really, I'm not out to destroy 
Microsoft. That will just be a completely unintentional 
side effect."
                 - Linus Torvalds -