How to view content message in queue spool ?

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How to view content message in queue spool ?
\ Truong Tan Son (22 Dec 2007)
. \ Sahil Tandon (22 Dec 2007)
. \ Truong Tan Son (22 Dec 2007)
. . \ (Wietse Venema) (22 Dec 2007)
. . . \ Truong Tan Son (22 Dec 2007)

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Subject:	How to view content message in queue spool ?
Group:	Postfix-users
From:	Truong Tan Son
Date:	22 Dec 2007

Dear Sir,

Sometimes Postfix has not yet finished to deliver message in queue spool by trouble of DNS, lease line, ..etc.

Can Postmaster view content message with indicated ID in queue spool by command line such as "postsuper", "postqueue", .. ?

Thanks you.

Truong Tan Son.