Sendmail and relaying errors

I have a small network, 3 Win98 machine and a Mandrake 6.1 server.  The server handles web traffic, FTP, and email.  Sendmail will route the emails to the right people, but when they try to send out they get a 550 - relaying not allowed.  I thought I had all the right options in ip_allow, relay_allow, relay-domain, and but maybe I forgot something.  A little help please?

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I thin'k the name of the file is relay-domains and no't  relay-domain

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jwonder69Author Commented:
Thanks, leave it to one little letter to mess you all up :)
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