local_domains.db duplicate entry

Hi everyone,

I'm seeing the following error repeated every so often in my SMTP log:

Dec 28 12:45:14 rocking-mm.com postfix/postmap[19452]: warning: /Library/Server/Mail/Data/scanner/amavis/local_domains.db: duplicate entry: "rocking-mm.com"

I'm not sure what is causing this, as I am running on a brand-new install of OS X Server 10.8 using Server App 2.2.

I have seen some other posts which refer to things like host domain and mydomain being the same, but none of that makes sense to me, as everything was filled in automatically during the setup process. Unless, of course, the setup process is flawed and this is a bug (which wouldn't surprise me, there are plenty of other bugs as well).

Any help is appreciated!

~Mike