Note: Server-side spam filtering is generally the best option as it removes the spam from your Inbox before you download load it. Please post in comments if this fixes it. Change the 'Use the following type of encrypted connection to Auto. In File, Account Settings double click on your email account. Potential workaround: Change the encryption setting for the account to Auto. When using the 'safe sender only' option, Outlook is letting addresses through that are not on the safe sender list. However, there appears to be a problem where Outlook is not blocking addresses on the blocked senders list.
