rule to manually put on hold

[Stéphane MERLE]

Hi,

How can I set a rule to put manually on HOLD all email sent to 
temporarydeaddomain.com ? I understand that postfix will automatically 
sent the emails in the deferred and deal with them from time to time but 
as I know that the domain is dead for a while, I'd like to move them 
directly on hold and resubmit them in the maildrop when I know that the 
domain will work again ...

Thanks for your help.

Stéphane