If you are like me, and have a Lion Server VM that you constantly nuke and pave, you may have run into this one.
A bug exists (likely not in 10.7.3, but actually Apple’s APNS service), that can cause setup of Apple push notifications to fail in either the wider Profile Manager setup assistant, or when signing in to get an APNS certificate in Server.app.
If you use an Apple ID to request a new certificate for the same hostname over and over, it will only work a certain number of times before you get stuck ‘Acquiring’ forever:
In Profile Manager setup, you get the slightly more informative “Getting push certificate status”, but I am yet to find any sort of verbosity in a log anywhere when this occurs.
When this occurs, Apple’s server creates a new certificate for you and then fails somewhere, never returning the newly created certificate. This actually compounds the problem, as too many certs seems to be the issue.
The current fix is to log into the Apple Push Certificates Portal, and revoke any old certificates for the affected hostname. This is obviously a pretty good housekeeping step anyway, but as the identity.apple.com portal is kind of obfuscated from the Server.app request process until you successfully get a certificate, you, as I did, might finally stumble across it, and find it pretty full of old certificates.
I have a radar in to throw a verbose error. I’m pretty sure Apple stopping you at a finite number of certs for a hostname is reasonable, but not failing silently without description would be nice.