Plus Addressing

[Jeff Grossman]

I have set up "recipient_delimiter = +" so I could put a folder name in 
an e-mail address and have it automatically filtered for me.  I am using 
"mailbox_command = /usr/local/libexec/dovecot/deliver -n -m 
"$EXTENSION"" as my mailbox_command.  When the mail gets passed to 
deliver, the extension is lower case even if it originally started as 
uppercase.  I asked on the Dovecot mailing list how I can convert it to 
uppercase for Deliver.  Timo stated that Deliver does not do any case 
changing and that Postfix must be passing the variable in lower case.  
Is there a way for me to not have Postfix change the case?  My folder 
names all start with a capital letter.  Deliver cannot find the mailbox 
because "folder" does not equal "Folder".

Thanks,
Jeff