Cyrus IMAP autosievefolder patch

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NOTE : This patch has been created at the University of Athens. For more info, as well 

as more patches on Cyrus IMAPD server, please visit http://email.uoa.gr 

  When the lmtpd daemon receives an email message prior to delivering it to the 

INBOX folder of the user, checks if the user has specified sieve filters. If the

user has specified sieve filters the filters are evaluated. If the message matches

any of the filters the action that is specified in the filter is executed. If the action 

is FileInto it is stored in the subfolder specified in the filter. If the 

subfolder doesn't exist then the message is sent to the INBOX folder of the user.

  With this patch if the folder doesn't exist AND the name of the subfolder is 

specified in the autosievefolders option, OR the anysievefolder is set to 

yes in the cyrus-imap configuration file then the subfolder is created and the mail 

is stored there.

Check the following options of the imapd.conf file

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* anysievefolder : It must be "yes" in order to permit the autocreation of any 

INBOX subfolder requested by a sieve filter, through the "fileinto" action. (default = no)

* autosievefolders : It is a "|" separated list of subfolders of INBOX that will be 

automatically created, if requested by a sieve filter, through the "fileinto" 

action. (default = null)

	i.e. autosievefolders: Junk | Spam

WARNING: anysievefolder, takes precedence over autosievefolders . Which means that if 

anysievefolder is set to "yes", cyrus will create any INBOX subfolder requested, no-matter what the value of autosievefolders is.

Things to be done

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1. Support cyrus wildcards in the autosievefolders option. 

For more information and updates please visit http://email.uoa.gr/projects/cyrus/autosievefolder