Sendmail and masq

[David Benigni]

>> Accessible to the internet is a Fedora Cora 1 machine running 
>> sendmail for a particular domain.  So, it has a MX record for 
>> that domain.
>> 
>> Inside our firewall I have a Red Hat 7.3 machine that runs 
>> sendmail locally that has access out of the firewall on port 25.
>> 
>> The 7.3 box just Whenever the 7.3 box sends mail out as root, 
>> its return address is root at localhost.localdomain.  The 7.3 is 
>> not in the same domain as the Fedora machine.  The mail 
>> leaves the 7.3 box and gets to the Fedora machine.  At the 
>> point where it hits the Fedora machine the return address is 
>> rewritten as the domain of the Fedora machine.

>This looks like normal behavior to me. anyID at localhost.localdomain is
>not a valid, routable email address. It is only valid within the
>onfines of any single machine's internal mail system. It would be
quite
>normal and desirable for an internet aware MTA to change such an
address
>to one that is routable.

>Eric Diamond
>eDiamond Networking & Security
>303-246-9555
>eric at ediamond.net 
 
While localhost.localdomain is not valid, I do not wish sendmail to
change the address in any such way.  Especially coming from an outside
server.  Thanks.

Dave