Ok, I tried to register an email address that already exists - and I get a message saying it's already in use - so it's talking happily to mySQL.
However, my mysql logs show: 011119 20:21:53 Aborted connection 64090 to db: 'vpopmail' user: 'root' host: `localhost' (Got an error reading communication packets) I've never seen this error until trying vqregister. Any tips? Thanks!