I've migrated a domain and two PO's to Linux and installed GW12.02 on a
single server.
The agents are all set to Linux

The MTA, and POA's start ok

My domain is now at version 12. Both my POA are at version 12

But my two Post Office databases remain at V8

The MTP status on the post office are sending and receiving on the correct
IP address.

The DC files are correct.

I've rebuilt the two PO databases

The link config are OK

GW monitor shows the DB and POA's are listening and are at versions 12.02

What have I missed or what else should I check?