sqwebmail pass

Hi everybody, I'm really new on use sqwebmail, my trouble is:

I had qmail, vpopmail 4.9 and sqwebmail 1.0 on linux 6.1, I just had the
pass file for each user on sqwebmail pass file, obviously encripted, and I
need migrate this server to other (with new qmail, vpopmail and sqwebmail
versions), my question is how can I get the password in clear format?,
because in this server there no one vpassword file or cbd file, this server
is on line with 2,000 accounts and I really don't want change the password
for each accounts in case of migration...

regards,

sir_ddd

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