I created a filter for an email account with a rule that for all messages that arrive to this email must be rejected, sending a message to the sender like mailer-daemon, but I noticed that all of my messages originating from my 'mailer-daemon@..' are hitting hotmail's junk folder. (No other messages from my server hit the junkbox, just these mailer-daemon ones)

SPF and DomainKeys are installed correctly.

Any help about this issue?