asterisk users - Oct 2005 - Connecting two asterisk servers using IAX

I am trying to connect two asterisk servers using the information from:
http://www.voip-info.org/tiki-index.php ...
+2+servers<http://www.voip-info.org/tiki-index.php?page=Asterisk+Connect+2+servers>
<http://www.voip-info.org/tiki-index.php?page=Asterisk+Connect+2+servers>

It works fine with Method 1.

If I use method 3, I get errors:

on sending server:
Registration of 'REC_SERVER' rejected: Registration Refused

on receiving server:
No registration for peer 'REC_SERVER' (from x.x.x.x)

Any thoughts?
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.digium.com/pipermail/asterisk-users/attachments/20051004/45a1b87c/attachment.htm