On Sun, 2005-01-09 at 17:57 +0100, Vegard Svanberg wrote:

Dovecot adds the "Status: O" header when users download their email. Why?

That's what pretty much all software that reads/writes mboxes do. It means that the mbox has been accessed by mail reader. This is the same as IMAP's \Recent flag.

With 1.0-tests and POP3 it's possible to disable this by setting pop3_no_flag_updates = yes.