dovecot - Sep 2011 - Trouble getting lda to gzip incomming mails (zlib plugin)

Hi!
I've followed the guide at http://wiki2.dovecot.org/Plugins/Zlib to try to
make Dovecot gzip incomming mails, but it doesn't seem to work.
I've made pop/imap read gzipped files, and this seems to work perfectly, but
LDA is still saving incomming mails in plain text.
There's not too much information out there regarding the zlib module, so
I'm not sure where to start debugging the problem, and was hoping someone
could point me in the right direction.

The only mention of zlib when LDA is delivering a file:
Sep 20 15:51:19 mail dovecot: deliver(helgemil): Module loaded:
/usr/lib/dovecot/modules/lda/lib20_zlib_plugin.so

The most relevant lines from dovecot.conf:
mail_debug = yes
protocols = imap pop3 imaps pop3s
mail_location = maildir:~/Maildir
mail_privileged_group = mail
max_mail_processes = 1024
mail_process_size = 512

protocol imap {
     mail_max_userip_connections = 50
     mail_plugins = fts fts_squat zlib
}

protocol pop3 {
     pop3_uidl_format = %08Xu%08Xv
     mail_max_userip_connections = 50
     mail_plugins = zlib
}

protocol lda {
     postmaster_address = postmaster at monsternett.no
     mail_plugins = sieve zlib
     mail_plugin_dir = /usr/lib/dovecot/modules/lda
     sieve_global_dir = /etc/dovecot/sieve/
     sieve_global_path = /etc/dovecot/sieve/default.sieve
}

plugin {
     zlib_save_level = 6
     zlib_save = gz
     fts = squat
     sieve = ~/dovecot.sieve
     sieve_dir = ~/
}

-- 
Helge Milde, 69701808
www.monsternett.no

I thinking your mail_plugin_dir is not needed, I don't have it  
configured, and that path doesn't even exist on my system, maybe  
hangover from 1.x config?


Quoting Helge Milde <helge at monsternett.no>:
> Hi!
> I've followed the guide at http://wiki2.dovecot.org/Plugins/Zlib to  
> try to make Dovecot gzip incomming mails, but it doesn't seem to work.
> I've made pop/imap read gzipped files, and this seems to work  
> perfectly, but LDA is still saving incomming mails in plain text.
> There's not too much information out there regarding the zlib  
> module, so I'm not sure where to start debugging the problem, and  
> was hoping someone could point me in the right direction.
>
> The only mention of zlib when LDA is delivering a file:
> Sep 20 15:51:19 mail dovecot: deliver(helgemil): Module loaded:  
> /usr/lib/dovecot/modules/lda/lib20_zlib_plugin.so   The most  
> relevant lines from dovecot.conf:
> mail_debug = yes
> protocols = imap pop3 imaps pop3s
> mail_location = maildir:~/Maildir
> mail_privileged_group = mail
> max_mail_processes = 1024
> mail_process_size = 512
>
> protocol imap {
>     mail_max_userip_connections = 50
>     mail_plugins = fts fts_squat zlib
> }
>
> protocol pop3 {
>     pop3_uidl_format = %08Xu%08Xv
>     mail_max_userip_connections = 50
>     mail_plugins = zlib
> }
>
> protocol lda {
>     postmaster_address = postmaster at monsternett.no
>     mail_plugins = sieve zlib
>     mail_plugin_dir = /usr/lib/dovecot/modules/lda
>     sieve_global_dir = /etc/dovecot/sieve/
>     sieve_global_path = /etc/dovecot/sieve/default.sieve
> }
>
> plugin {
>     zlib_save_level = 6
>     zlib_save = gz
>     fts = squat
>     sieve = ~/dovecot.sieve
>     sieve_dir = ~/
> }
>
> -- 
> Helge Milde, 69701808
> www.monsternett.no

On 20.9.2011, at 16.58, Helge Milde wrote:
> plugin {
>    zlib_save_level = 6
>    zlib_save = gz
These are enough. You don't mention your Dovecot version. My guess is that
your Dovecot version is too old and doesn't support saving mails with zlib.