I'm converting an older CentOS 5 server [which started life as a CentOS 4
server many years ago] to a new CentOS 7 server.

I've moved everything over, and was doing rsyncs [and Database updates of
vpopmail/valias].

I've hit an interesting problem, the new CentOS 7 server will not allow me
to login/access an email account with the old style 12-14 length encrypted
password. I even tried old_passwords=1 in my.cnf thinking that might enable
the old MySQL V4 password format as it looks like that. Any of the newer
accounts that have the longer encrypted password work fine. The other hint
that an email address will work is if the pw_clear_password is not unknown,
then it works.

I can run vchangepw against the account, then it works... I then see the new
longer format, but this does not help me in that many of these email
accounts I do not have the original password.

Is there any easy way to find all the older accounts with old passwords and
convert them to the new format. Almost a "if pw_clear_password = unknown,
then upgrade password to new password". I have around 200+ domains with
plenty of email accounts that have the old format... 

Thanks,
Carl


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