[Dovecot] disable zlib via config to allow per mailbox compression level

[Timo Sirainen]

On 11.10.2010, at 0.48, Jerrale G wrote:

>>>>   zlib_save_level = 6 # 1..9
>>>>   zlib_save = gz # or bz2
> for all other applications in *nix, where it uses the zlib or bzlib libraries, setting the compression to 0 usually allows disabling it.
> Can you show your "doveconf -n" output please?

Setting it to 0 doesn't disable it. Setting it to empty ("") might disable it. I'm not sure right now. And setting zlib_save to empty might also disable it .. or with SQL setting it to NULL. Anyway, one of those sound like a good bet.