default domain reverts to hostname?

[Jo Rhett]

Okay, I know this was hashed out a while ago so I'm sure there's a good 
answer for it, but I can't seem to find this in the archives.

With virtdomains: yes, if you specify defaultdomain: mydomain.com, then 
what happens is that authentication against the database always sets the 
realm to $hostname.

This isn't a good behavior.  What if the hostname changes?  What if the 
tools used to edit the database don't know (or need to) the current 
system hostname?

Isn't there a way so that 'jrhett' or 'jrhett@${defaultdomain}' 
authenticate with sasl with a realm set to the default domain?