On Apr 10, 2009, at 3:08 AM, <ogu_yo at yahoo.co.jp> wrote: > Hi, > >> No. But it can use them. > > How can I use them? > Do I need any additional setting to dovecot.conf? # If mail has X-UIDL header, use it as the mail's UIDL. #pop3_reuse_xuidl = no