There's no definite answer to your question. You should always keep two 
things in mind:

* Anybody you can his way into the control domain and gain root 
privileges can damage all guests in your system.
* Any application running on your control domain is open to a DOS attack 
which then might do disturb services needed by the other guests

My personal best practice is to only run (system-)management like stuff 
  apart from services for the guests in the control domain, and put all 
other stuff in a "simple" guest

HTH
Martin

On 12/22/08 14:37, Mark Dornfeld wrote:
> Is it advisable to use the control domain for anything other than LDom 
> functions? E.g. for a small DNS server or low volume Postfix mail server?
> 
> Mark T. Dornfeld, Cyantic Systems Corporation
> 203-2800 Skymark Avenue                               
> Mississauga, Ontario, L4W 5A6 CANADA
> Cell: (416) 616-6682 Main: (416) 621-6161  Fax: (416) 622-4130
> Email: mark at cyantic.com <mailto:mark at cyantic.com>
> 
> 
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-- 
Martin M?ller                 martin.mueller at sun.com
Ambassador Datacenter         Tel.: +49 2102 45 11740
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