Quoting Mike Nielsen (mike at getbent.net):
> Hi there, a while back I posted a question about my attempt to configure my 
> sendmail box to relay/spool mail for another domain.
> 
> I was helped along by simply adding the domains (Not mine, the ones I want to 
> spool for) to  /etc/mail/relay-domains   

What verion of sendmail are you running?

What distribtion?
-- 
Bob Tanner <tanner at real-time.com>       | Phone : (952)943-8700
http://www.mn-linux.org                 | Fax   : (952)943-8500
Key fingerprint =  6C E9 51 4F D5 3E 4C 66 62 A9 10 E5 35 85 39 D9