Yes, it is a single install and I did a search and found same thread you referenced.
and all was right with the world. Server is back up and I was left with my two original problems that gave me this chance to wander in to this two day marathon.
zmprov ms zimbra.bbsd.org -zimbraServiceEnabled imapproxy
First was IM was not working even thought the feature was made available. Searched again and ran this:
And again all was correct with IM.
zmprov -l -v mcf zimbraXMPPEnabled TRUE
zmprov -v mc default zimbraFeatureIMEnabled TRUE
zmprov -v mc default zimbraFeatureInstantNotify TRUE
Last problem. On Version 4.5 I used my ISP as a relay. Now I and getting delivery failures for all outgoing mail with statement:
Now where do I look.
This is the mail system at host zimbra.bbsd.org.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
: host smtp.isp.com[xx.xx.x.x] said: 550 must be
authenticated (in reply to RCPT TO command)
Again, thanks for your great response.