Microsoft uses technology to protect our services and our customers. We filter or block e-mail messages to stop spam or to increase security. However, reasonable trade-offs are sometimes made when we try to protect customers. Therefore, some wanted communications may be filtered unintentionally.
To make sure that customers do not receive unwanted or inappropriate e-mail messages, Microsoft Outlook 2013, Microsoft Outlook 2010, Microsoft Office Outlook 2007 and Microsoft Office Outlook 2003 use anti-spam technology. This technology filters some e-mail messages based on characteristics that are common to spam. Microsoft also helps users and system administrators override unintentional filtering of their mail by helping to manage how filters and related systems handle e-mail messages.
For the security of the junk e-mail feature, we do not disclose or discuss detailed information on a per-message basis.
For situations in which you want to have a bit more control over how messages are filtered or how messages are not filtered by the anti-spam features, you can use several methods in Outlook, in Microsoft Exchange Server, or in both. For example, if you have to make sure that e-mail from a specific domain is not treated as junk e-mail, add the domain to the Safe Senders list.
Outlook contains several settings that control the way that messages are filtered. You can add the sender to your Safe Senders list. To do this, follow the steps below:
Outlook 2010 and Outlook 2013
In the Inbox, right-click the message.
Point to Junk, and then click Never Block Sender.
To change your spam filter settings, follow these steps:
Click on the Home tab on the Outlook ribbon.
In the Delete group, click the Junk button, and then click Junk Email Options...
Adjust the filter to catch more or less junk mail in your Inbox.
For more information about safe sender and blocked sender lists, visit the following Microsoft Web site: