A bug in Outlook can cause unexpected authentication prompts to appear for users in on-premises Exchange 2013 and 2016 environments.
Outlook may display a security alert with certificate warning messages after installing Exchange Server 2016 into your environment.
Is Microsoft Outlook for iOS and Android mobile devices ready to be considered as a user friendly and secure enterprise mobile email app?
How to block or quarantine the Outlook for iOS and Android app from Exchange Server 2010/2013 and Office 365.
Tips and tools for reading email message headers and using message header information to diagnose email problems.
Performing the cut over of namespaces from Exchange 2010 to Exchange 2013 during a migration project.
Outlook clients may begin displaying a security alert warning dialog after an Exchange 2013 server installed into an existing organization.
Using Exmon and Log Parser to discover client versions when planning an Exchange Server 2013 upgrade.
Some end users in your Exchange Server environment may have a requirement to "send as" a mailbox that they also need to remain hidden from the global address list.
An invisible inbox rule may cause deleted delegates to continue receiving meeting requests in an Exchange Server environment.