Mail Problems on 3B2/600

[Bill Chimiak]

When sending mail on my 3B2/600 using mail or mailx, if the machine
cannot find it (I imagine in /etc/hosts), the mail comes back.  Now one
solution is for me to duplicate the /etc/hosts table on our reginal
nameserver.  This would be quite taxing on our machines resources.  A
more desireable solution would be to use a NAMESERVER mechanism as
Berkeley-like systems provide.

The proceedure I would like is the following:
 o send email to user at destination.whatever
 o if destination.whatever is not in my host table, the email is then
   forwarded to the NAMESERVER
 o the NAMESERVER then sends the email to destination.whatever.

Also required is the response from user at destination.whatever to return
to my 3B2/600.  One could do the following:  If one had a machine
on one's network, smart_machine, that had access to a NAMESERVER mechanism,
then sending email to user at destination.whatever@smart_machine would
easily get mail out but cause intermittent problems receiving replies.

Has someone solved this problem?

Thanks in advance.