[Dovecot] Problem compiling dovecot-antispam on Ubuntu 11.10 using Doveot 2.0.13

Hello,

Last dovecot available version on Ubuntu 11.10 AMD64 is dovecot 2.0.13. dovecot-antispam package is compiled for dovecot 2.0.15.

So, i'm trying to compile a new dovecot antispam plugin. I followed dovecot wiki but i'm running into this error : Successfully compiled dspam.c (plugin). mailbox.c: In function 'antispam_save_begin': mailbox.c:138:12: error: 'struct mail_save_context' has no member named 'copying_via_save' mailbox.c: In function 'antispam_save_finish': mailbox.c:174:12: error: 'struct mail_save_context' has no member named 'copying_via_save' Failed to compile mailbox.c (plugin)!

Any hint please ?

Regards,

-- Guillaume Hilt