Oleg Pan пишет:
>> ну а что поцфикс.. queue какой-то у него тоже есть.
>>     
> а как сделать так чтоб письмо полежало в этом queue
> пока идет backup, и только потом доставилось?
>   
Может вот это подойдет из man postsuper
       -h queue_id
              Put mail "on hold" so that no attempt is  made  to 
deliver  it.
              Move  one  message  with  the named queue ID from the
named mail
              queue(s) (default: incoming, active and deferred)  to 
the  hold
              queue.

              If  a  queue_id  of  - is specified, the program reads
queue IDs
              from standard input.

              Specify -h ALL to hold all messages; for example, specify
-h ALL
              deferred  to  hold mail in the deferred queue.  As a
safety mea-
              sure, the word ALL must be specified in upper case.

              Note: while mail is "on hold" it will not expire when 
its  time
              in    the    queue   exceeds   the  
maximal_queue_lifetime   or
              bounce_queue_lifetime setting. It becomes subject to 
expiration
              after it is released from "hold".

       -H queue_id
              Release  mail that was put "on hold".  Move one message
with the
              named queue ID from the named mail queue(s) (default: 
hold)  to
              the deferred queue.

              If  a  queue_id  of  - is specified, the program reads
queue IDs
              from standard input.

              Note: use "postsuper -r" to release mail that was kept 
on  hold
              for   a   significant  fraction  of 
$maximal_queue_lifetime  or
              $bounce_queue_lifetime, or longer.

              Specify -H ALL to release all mail that  is  "on  hold".  
As  a
              safety measure, the word ALL must be specified in upper case.

Не понятно только, приходящие письма после команды на холд тоже
становятся на холд или к вновь прибывшим это не относится?

-- 
С уважением,
Дубровский Вячеслав.