Issue

A user complained that he is was not receiving emails from certain recipients. The mailbox was hosted on Office 365 account and the user had access from multiple clients, including Outlook on a Windows PC, Apple mail on a Mac, and an iPad / iPhone email app. Email tracking indicated that all missing emails were received and delivered to the mailbox, however they were missing from the user’s mailbox and deleted items folders. I managed to restore all missing emails using Office 365 / Exchange Recover Deleted Items feature.

Resolution

The issue has been caused by “Permanently delete suspected junk e-mail instead of moving it to the Junk E-mail folder” option enabled in MS Outlook 2010 Junk-Mail options.

11.2014
Office 365
MS Outlook 2010
Windows 7