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 productivity for admins, and we’ll announce them as they become available. The first wave of capabilities is being released in May 2018 and…


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 tracing messages, but it’s visually cluttered and confusing, and it lacks a number of more sophisticated capabilities. To make Message Trace…


Changes 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 known as SMTP Client Submission) which is supported by most email service providers. This non-proprietary protocol is used to send email by legacy…


EAI support announcement – Update

In late December 2017, we announced support for EAI in Q1 2018. We are happy to announce that EAI is now enabled in Exchange Online and Exchange Online Protection for Office 365. Office 365 users can now send messages to and receive messages from internationalized email addresses. In addition, we are pleased to announce that…


EAI support announcement

Update 2/26/2018: For the latest developments on the subject please see this blog post. Out of 7.6 billion people in the world, only 360 million are native English speakers. Although email has been the earliest and most widely-adopted platform for modern electronic communication, email addresses have only supported a limited subset of Latin characters (mostly…


Why is my Address Rewriting not working as expected?

Address Rewriting is a feature of the Transport Agent that runs on the Edge Server role. It enables the modification of addresses for both senders and recipients on messages that enter and leave your Exchange organization. First introduced in Exchange 2007, customers are using Address rewriting to present a consistent appearance of E-mail Address for…


An update to "Important notice for Office 365 email customers who have configured connectors"

Since we posted this blog post, we have received positive responses from many of our customers, who have proceeded with changing their connectors (as per instructions in the post), thereby protecting their email/domain reputation. However, we are also aware of customers who are either in the midst of making this change or need some additional…


Important notice for Office 365 email customers who have configured connectors

Note: This post, originally published in March, got accidentally re-published on 8/23/16 when updating step 5 below. We are leaving it published as a reminder to our customers as the time for this change is now closer. If you are an Exchange Online or Exchange Online Protection (EOP) customer and you have configured connectors, this…


Important notice for Office 365 email customers who have configured connectors

If you are an Exchange Online or Exchange Online Protection (EOP) customer and you have configured connectors, this post contains important information that might impact your organization. To make sure that your mail flow isn’t interrupted, we strongly recommend that you read this post and take any necessary action before the deadline (July 5th, 2017)….


Exchange Online Advanced Threat Protection is now available

Just a quick note that we have released a new service that some of you might be interested in, called Exchange Online Advanced Threat Protection. This is a complementary service to already existing  Exchange Online Protection (EOP) and extends to additional types of advanced threats. To learn more, head over here: Exchange Online Advanced Threat…

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