Hello, I found older (1998 ) posts about mailbox or attachment compression, but no answer to my question. Is it possible to configure cyrus the way that it compresses the attachments on the storage ( not for tranfer as in RFC 4978 ) ? I know that diskspace is cheap, but when you have to get back thousands of mailboxes from a backup, the smaller the files are the faster the restore is done. Thanks Andreas ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html