[Dovecot] how to make the server consistent for replication?

[atul chaudhari]

hi every one,
   i want to make the dovecot mail server consistent and flush its caches for backup purpose.
  can anybody tell mehow to make that? (i've written a signal handler to  call the functoins from my code. The server caches should be flushed  before the function call.)
  any reply ?
  
		
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