dovecot - Oct 2013 - Dovecot proxy hooks

I am interested in the possibility of using Dovecot IMAP/POP proxying 
capabilities to analyze emails that are passing through and possibly 
modify content on the fly. This subject has been discussed here [1] 
before.
I have tried the mail-filter plugin [2], but the hooks it uses are only 
called in a non-proxy setup.

Is there a practical way of doing this, or plans to add such a feature?

Links:
[1]: http://dovecot.org/list/dovecot/2006-February/011704.html
[2]: http://www.dovecot.org/patches/2.2/mail-filter.tar.gz

On 14.10.2013, at 21.22, dac at getodata.ro wrote:
> I am interested in the possibility of using Dovecot IMAP/POP proxying
capabilities to analyze emails that are passing through and possibly modify
content on the fly. This subject has been discussed here [1] before.
> I have tried the mail-filter plugin [2], but the hooks it uses are only
called in a non-proxy setup.
> 
> Is there a practical way of doing this, or plans to add such a feature?
> 
> Links:
> [1]: http://dovecot.org/list/dovecot/2006-February/011704.html
> [2]: http://www.dovecot.org/patches/2.2/mail-filter.tar.gz
You can?t use the simple proxying feature for this. If you modify the mail
content, it would require modifying quite a lot of different command outputs and
there?s no way a proxy could do it without more or less reimplementing half of
the IMAP server functionality. But what you could do is to use the imapc backend
and the mail-filter.