I am trying to setup a LAN utilizing OpenSuse 11 with what I think is configured as a local domain. Meaning, my domain name is "insidelan.local". Now I can ping my internal device and it does come back with a response of pc1.insidelan.local. My problem now is I then configured postfix and I am able to telnet both to the localhost and to srvr1 via port 25 and all is well. But when I try to send an email and traced it, it is failing to relay. Is what I'm doing possible or do I need to register a legal domain? Any suggestions or howto is greatly appreciated.
As always, thank you in advance for your time on this matter.