Valid email flagged as Junk...repeatedly

[Koyukon]

Has anyone experienced valid email addresses being flagged as Junk. I have labeled it "not Junk" in Outlook 2007... everything works for some time and then "boom" back to the "Junk folder" I am supporting 40 users and this has happened a few times a week for a handfull of users, since the Zimbra Network Edition install a month ago.

TYIA,

[ewilen]

Please right-click and go "show original", then post the full headers of the mail which got mis-classified. (It's okay to suppress the email addresses and other private info. We just need the headers pertaining to spam classification.)

[Klug]

Also, disable the integrated antispam tool in Outlook.

[Koyukon]

Thanks for the response. I will try the Anti-spam tool first and see if that helps.
Cheers,