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Exchange Server TLS guidance Part 2: Enabling TLS 1.2 and Identifying Clients...
Overview In part 2 of our Exchange Server TLS Guidance series we focus on enabling and confirming TLS 1.2 can be used by your Exchange Servers for incoming and outgoing connections, as well as...
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A new architecture for Exchange hybrid customers enables Outlook mobile and...
We’re announcing a new architecture for Exchange Server and Office 365 hybrid customers that unlocks Enterprise Mobility + Security (EMS) capabilities for Outlook for iOS and Android. With Hybrid...
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Office 365: Auto-Expanding Archives FAQ
In recent months we’ve been receiving quite a few questions from customers regarding auto-expanding archives. I’d like to clear up some of the misconceptions and answer some of the most frequently...
View ArticleExchange 2010 End of Support Is Coming
On January 14, 2020, Exchange Server 2010 will reach end of support. If you haven’t already begun your migration from Exchange 2010 to Office 365 or Exchange 2016, now’s the time to start your...
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Exchange Server 2013 Enters Extended Support Lifecycle Phase
Exchange Server 2013 enters the Extended Support phase of product lifecycle on April 10th, 2018. During Extended Support, products receive only updates defined as Critical consistent with the Security...
View ArticleOffCAT’s replacement – Microsoft Support and Recovery Assistant (SaRA)
After over five years of providing configuration information and solutions to known issues, the OffCAT team is planning to remove OffCAT from the Microsoft Download Center on May 31, 2018. The good...
View ArticleChanges coming to the SMTP Authenticated Submission client protocol
There are a number of client protocols offered by Exchange Online to allow email clients to send email from their mailboxes. One of the most widespread protocols is SMTP Authenticated Submission (also...
View ArticleAnnouncing the increase of the Public Folder limit in Exchange Online from...
Last September, we officially announced the increase of the supported limit of Public Folders in Exchange Online from 100,000 to 250,000. In line with our efforts to scale Public Folders even further,...
View ArticleNew date for discontinuation of support for Session Border Controllers in...
In July 2017, we announced that support for Session Border Controllers (SBC) that connect 3rd Party PBX systems to Exchange Online Unified Messaging (UM) would be discontinued as of July 2018. After...
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New Message Trace in Office 365 Security & Compliance Center
Overview Message Trace is a key tool for email admins to troubleshoot and track the health of their organization's mail flow. Message Trace in the Exchange Admin Center (EAC) is a useful tool for...
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Mail flow insights are available in Security & Compliance center
We're excited to announce that Mail flow Insights will soon be available in the Office 365 Security & Compliance Center. We'll continue to create and refine mail flow insights to help improve...
View ArticleExchange Server TLS guidance Part 3: Turning Off TLS 1.0/1.1
Overview In part 3 of our Exchange Server TLS Guidance series, we introduce how to turn off TLS 1.0 and 1.1 in your Exchange Server deployment. Turning off TLS 1.0 and 1.1 can be a highly disruptive...
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Best practices for using assigned Office 365 DNS records
As someone who reads through hundreds of support cases each month, nothing pains me more than seeing customers struggling with seemingly complex issues, only to discover that the root cause is quite...
View ArticleSender Rewriting Scheme (SRS) coming to Office 365
The introduction of email authentication mechanisms like SPF, DKIM, and DMARC have improved email security and spoofing prevention. However, some scenarios have been disrupted by these authentication...
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Hybrid Organization Configuration Transfer
We are very happy to announce a new feature that will help you the admin reduce the amount of time needed to configure config objects once hybrid setup is complete. What does this feature do? This...
View ArticleReleased: June 2018 Quarterly Exchange Updates
The latest cumulative updates for Exchange Server 2016 and Exchange Server 2013 are now available on the download center. An update rollup for Exchange Server 2010 is also available. The updates...
View ArticleAnnouncing the support for modern public folder migrations without dumpster data
Long time Exchange administrators will remember that Exchange Server had a feature that was for a while unceremoniously referred to as the “dumpster”. We have since renamed the feature to a more...
View ArticleCorrecting Shared Mailbox provisioning and sizing
We are correcting how shared (and resource) mailboxes are created in Exchange Online. As per our documentation (here and here), shared and resource mailboxes in Exchange Online should be created with...
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Update on mail flow insights
Last month, we announced the release of mail flow insights in the Office 365 Security & Compliance Center in this blog post. We're making changes to the mail flow insights dashboard to make it more...
View ArticleResource Based Throttling and Prioritization in Exchange Online Migrations
We often get questions about throttling in Mailbox Replication Service (MRS) based migrations in Exchange online. When migrating, you may see messages such as StalledDueTo_TargetDiskLatency for some...
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