Windows 2003 SMTP service not relaying

This should be easy.

I got a Windows 2003 server, and an ASPNET application.  Point is, I want to send mail.  I do not have an SMTP server available, as this is on a dedicated box somewhere.  I setup the Microsoft SMTP service.  Problem is: every time I sent an email, it is unable to relay.  To fix this, I must add a domain alias for every possible domain I would send to.  There has got to be a better way.  Is the MS SMTP service not sufficient?  If not, can anyone recommend a solution?

Thanks,

Chris
chrispaloAsked:
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binary_1001010Commented:
http://ninelives.clubsnap.org/win/relay.JPG

look at the screen shot, u need to launch IIS, right click on the default smtp virtual server , select properties.
Click on access, then click on relay.  check "allow all except below".
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chrispaloAuthor Commented:
Oops.  That was ridiculously easy.  At a glance, I saw "Allow all computers which successfully authenticate to relay, regardless of the list above."  and didn't think to change anything else on that tab.  Thank you!
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Windows Server 2003

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