Question : SSL Certificate on a new IP address

We recently moved our Windows 2003 SBS server running Exchange with OWA capabilities enabled from one site to another.  At the new IP address the OWA worked fine but the PDAs were no longer connecting.  I generated a new certificate and installed it.  Now the PDAs work but the OWA says  the certificate is generated by a non=trusted authority (me).  I cannot get the message to go away even after importing the certificate into the browser.  I reverted to our old certificate and the webmail is happy but now the PDAs are broken again.  I thought the IP-SSL linkage was no longer used and as long as the host name remained the same the certificate would still work.  I need to get both the PDAs and the web access workiing without errors on either.  Thanks.

Answer : SSL Certificate on a new IP address

Not normally, unless the IP is actually the subject name of the cert.  Normally the subject name is the DNS name, however, so IP is not a factor 99.something percent of the time.