I wanted to forward information from the director to the backend dovecot
(original login name), so I had the userdb on the director return a
forward_ologin variable.
However, when I tried to use that variable in the "password_key" query
on the backend dovecot, ${forward_ologin} was expanded to
UNSUPPORTED_VARIABLE_forward_ologin.
After testing a bit and looking around in the source a bit, and turning on
debugging logging, it appeared that the forwarded variables actually appear as
"passdb/userdb extra fields". So in my case, the forwarded information
is available as %{passdb:forward_ologin}.
So, problem solved, but this is either an implementation bug, or a documentation
bug, or oversight.
--
Jan-Pieter Cornet <johnpc at xs4all.net>
Systeembeheer XS4ALL Internet bv
www.xs4all.nl
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