[Dovecot] Transparent IMAP proxy

[Yonatan Broza]

Hi,

I'm considering patching Dovecot to work as a transparent (and virus 
scanning) IMAP proxy.

What is the appropriate feature to extend? (I've considered the 
following: IMAPC and reverse proxying, with IMAPC looking more promising 
since it actually parses IMAP communication).

Can anyone who is familiar with the IMAPC code recommend what are the 
most appropriate locations in the code to make the required changes? 
(I've considered hooking the storage virtual functions and making the 
settings local rather than global - but would appreciate more specific 
ideas).

Thanks.