The popa3d homepage is:

http://www.openwall.com/popa3d/

There's a mailing list where you can share your experience with popa3d
and ask questions.  To subscribe, send an empty message to
<popa3d-users-subscribe at lists.openwall.com>.  The list archives are
available on MARC:

http://marc.theaimsgroup.com/?l=popa3d-users

In addition to the popa3d-users list, you have the option to direct
your comments regarding popa3d to the author privately at <solar at
openwall.com>.

Commercial support for popa3d is available from Openwall:

http://www.openwall.com/services/

We may help you install popa3d or even help you integrate it into an
existing mail server and mail user database setup you might have.  The
latter might be a combination of our free software development and
consulting services.

-- 
Solar Designer <solar at openwall.com>

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