mail server problem

[yogesh at banasdairy.coop]

hi i have a mail server in send mail

i create a new mail server in postfix.now i want all the user(150) mail
box with all message (inbox,trash,sent,draft,other folder) move to the new
postfix mail server .so is there any way that i can tranfer all mail from
one send mail serbver to postfix server

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