postfix problem

[patrick john mahoney <pmahoney@students.uiuc.edu>]

I am having problems connecting to my college's smtp server
(students.uiuc.edu) with postfix.  The smtp server says "not an open
relay".  I can, however, use spruce (gtk+ email client) to connect to the
smtp server.

In the mail headers, the postfix mail has this line:

Received: from carrera.localdomain (postfix@pbd1309.urh.uiuc.edu
[130.126.169.142])
        by relay1.cso.uiuc.edu (8.10.1/8.10.1) with ESMTP id e7LD6eb11661
        for <pmahoney@uiuc.edu>; Mon, 21 Aug 2000 08:06:41 -0500 (CDT)


The same line in the spruce mail looks like this:

Received: from carrera (pbd1309.urh.uiuc.edu [130.126.169.142])
        by ux8.cso.uiuc.edu (8.10.1/8.10.1) with SMTP id e7LDHck16446
        for pat7@gmx.net; Mon, 21 Aug 2000 08:17:39 -0500 (CDT)


The postfix uses postfix@pbd1309.urh.uiuc.edu while the spruce does not.
Is this the problem?  How do I fix it, or what is the real problem?  

I use dhcp and don't have a static IP nor can I get a domain name.

Thanks.

--
Pat Mahoney	<pat7@gmx.net>