Sendmail FC2

[Jonathan Allen]

Hi All,

I'm having difficulty setting up sendmail in an FC2 network.  The mail
server is at 192.168.1.63 (on its LAN NIC) and all the other LAN machines
are at 192.168.1.32-45.  All the LAN machines can open the sendmail port
on the mail server at 192.168.1.63:25, either by name or IP address.
However, outgoing mail is only accepted from one machine: 192.168.1.32
All the other machines get 550 4.7.1 <email-address)... Relaying denied.

The same sendmail.mc and therefore sendmail.cf is being used on the
mail server for the whole LAN, and does all the domain masquerading - so
if it works for 192.168.1.32, why doesn't it work for 192.168.1.34 and
the other LAN machines ?  All the LAN machines are declared in the
/etc/hosts file on the mail server and the HELO and server response is
always correctly identified.

Help !

Jonathan