While repairing a troublesome IMAP connection with Office 365, a list of over 500 Outlook Contacts mysteriously disappeared. Learn how to prevent and safeguard yourself against that happening to you by following the steps in this article.
This article will guide you how to configure your Exchange server to use external DNS servers for external DNS lookups. This is for Exchange 2013 or higher versions. It is recommended to configure the DNS servers for flawless mail flow.