The maildir resource does not use the maildir standard for filenames. Instead, it uses an UUID. There is no official standard, but there is a naming scheme that is commonly in use, see: http://cr.yp.to/proto/maildir.html http://wiki.dovecot.org/MailboxFormat/Maildir http://www.qmail.org/qmail-manual-html/man5/maildir.html KMail 1's constructValidMaildirFilename() function
Fixed in 994acace9