A report released by Microsoft explained how attackers compromised admin accounts in a tenant and created a malicious OAuth app to control Exchange Online.
This article explains the importance of deploying Autodiscover correctly to ensure that all of Microsoft 365 works, including Exchange Online.
Learn how to migrate Office 365 inactive mailboxes and deleted OneDrives to comply with retention policies.
In this article, we will discuss the Analysis phase of an Exchange Online domain move project. Please refer to our previous post for a brief overview of the five best practices for Microsoft 365 Exchange Online Domain Transfers.
This article describes how to use Exchange transport rules to protect administrator mailboxes from malware and phishing attempts.
Exchange Online now supports SMTP Strict Transport Security (MTA-STS), a mechanism to help defend SMTP communications between mail servers.
Exchange Online has mailbox retention policies. Microsoft 365 has retention policies and retention labels. In this article, we explore how to move away from Exchange Online retention to use Microsoft 365 retention.
In a December 24 announcement, Microsoft says that the roll-out of DNSSEC and DANE support in Exchange Online will start in mid-January 2022. It's a phased deployment and won't complete until mid-May.
Microsoft Sentinel is Microsoft's log aggregator. Along with other data, Sentinel can ingest events from the Office 365 audit log. Once ingested, we can visualize the data through workbooks.
On November 1, Microsoft will limit auto-expanding archives to 1.5 TB and bring the era of "bottomless archiving" to an end. The new limit might not affect many Exchange Online tenants.
From November 1, 2021, Microsoft requires Outlook 2013 Service Pack 1 (with fixes) as the minimum client version to connect to Exchange Online.
Azure B2B guest accounts are often created during a Merger & Acquisition, so teams from both organizations can easily collaborate during the business and technology integration. However, these external users with B2B Guest accounts in their directory will eventually need to be migrated, which is problematic since B2B Guest accounts aren’t recognized as being licensed. The guest account can be removed and a new one created, but previous permissions would be lost. So how do we preserve permissions, keep collaborating without managing two sets of credentials while preparing the user account for data migrations? This article walks you through a solution that can be used in certain situations to help you easily manage the account to meet your needs.
