
If you have several accounts, the Junk Email options dialog shows the settings for the account whose folders you are currently viewing.

Beginning with Outlook 2010, the Junk Email filter setting are applied to each e-mail account individually.In practice, this means that your Outlook rules won't be applied to messages moved to the Junk folder. In Outlook 2003, 20, the Junk Mail filter runs before Outlook rules.Junk Mail Filter is turned on by default in Outlook, the protection level is set to Low to catch only the most obvious spam emails.Two Exchange Server accounts types - accounts that deliver to an Outlook Data File (.pst) and accounts in Cached Exchange Mode (.ost).The following email account types are supported:.The Junk Email Filter moves suspected spam to the Junk folder but it doesn't block junk emails from getting into your Outlook.I am not going to waste your time digging deep in theory, just a few facts that you should keep in mind or check before you start configuring the filter settings.
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As a result, it is impossible to completely stop the delivery of junk messages. That is why, unluckily for all of us, they did not devise any mechanism that would ensure 100% protection against unsolicited e-mail. The email protocol was invented by scientists and it could never occur to them that someone would be sending all those car insurance quotes, loans, mortgage rates, pills and diets to unknown people. The fact is that as long as junk mails has at least a tiny degree of effectiveness, say 0.0001%, spam will continue to be sent in millions and billions of copies.

You will also learn how to keep your filter up to date, how to move a good message from the Junk folder and ensure that no legitimate e-mails gets there. This article explains how to configure Outlook Junk Mail Filter to block as many junk emails as possible.
