Stellar Migrator for Exchange simplifies On-Premises and Tenant-to-Tenant migrations with a secure, PowerShell-free local ...

Microsoft has backed away from planned changes to Exchange Online after customers objected to limits designed to curb outbound email abuse.

Microsoft revealed today that it will no longer be limiting Exchange Online bulk email senders to 2,000 external recipients per ...

Threat actors are exploiting complex routing scenarios and misconfigured spoof protections to send spoofed phishing emails, ...

Microsoft has announced some big changes to the pricing and licensing of its on-premises server products, which will take effect in July and August 2025. The company says these updates are needed to ...

In the Cached Exchange Mode, a copy of your mailbox is saved on your computer. The copy offers prompt access to your data and is often updated with the server that runs Microsoft Exchange. Cached mode ...

More than 29,000 Microsoft Exchange servers exposed to the internet have remained unpatched against a high-severity vulnerability that could allow attackers to seize control of entire domains in ...

Update, August 10, 2025: This story, originally published on August 7, has been updated with additional information following a demonstration of the shared service principal exploit at the Black Hat ...

Microsoft finds high-severity flaw in hybrid Exchange instances Both Exchange Server 2016 and Exchange Server 2019 are affected, and so is Microsoft Exchange Server Subscription Edition A hotfix is ...

Microsoft Exchange customers have been warned about a new high-severity vulnerability, which could allow an attacker to escalate privileges within an organization’s connected cloud environment. The ...

Get the latest federal technology news delivered to your inbox. The Cybersecurity and Infrastructure Security Agency issued an emergency directive Thursday instructing agencies to take immediate ...