[Exim] Real time???

Hi all, I posted a similar message in a FreeBSD list few days ago,
but I can't solve my pro...the problem is that my mail server and router
have the same time and when I send any mail the "send-time" have 4 hours
difference compared with the real time, now I have 5:09 pm...any idea??? I'm
under FreeBSD 4.7