I followed that page to perform the rename process on the test server, all was working ok but then the live server stopped working and checking the logs showed mail trying to relay through the test server.
I found the following thread which seems very much like the problem I was experiencing.
Problem starting up Zimbra
I managed to get everything working again by restoring everything except the db, store, index and data folders to the working directory and then copying these folders over from the broken install.
It does seem to be working ok, I am however now getting messages in the logs from slapd saying:
Code:
May 21 09:53:18 zimbra slapd[12427]: bdb(): Lock table is out of available locker entries
May 21 09:53:18 zimbra slapd[12427]: bdb_db_cache: db_open(displayName) failed: Cannot allocate memory (12)
May 21 09:53:18 zimbra slapd[12427]: <= bdb_substring_candidates: (displayName) index_param failed (12)