Category: Exchange

May 23rd, 2018 by Exchange
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 event if not planned and executed properly. The Exchange team believes that it is time for the ecosystem to fully embrace TLS 1.2, but urges you to proceed with caution when disabling TLS 1.0 and 1.1. This includes understanding how and being prepared to reverse the configuration steps if necessary. ...

Keep on reading: Exchange Server TLS guidance Part 3: Turning Off TLS 1.0/1.1

Posted in Exchange

May 2nd, 2018 by Exchange
Email security should be top-of-mind for any organization. Being that the SMTP protocol does not provide much (any) security or authentication natively, we rely on frameworks and extensions to provide these capabilities. Here's a quick primer on what they are, how they work, and how you can protect your organization. Sender Protection Framework (SPF) - SPF provides a way for you to list permitted IP addresses that send email for your SMTP domain. An SPF (TXT) record is created in the publi...

Keep on reading: Exchange and SPF, DKIM, and DMARC. Oh my!

Posted in Exchange

April 29th, 2018 by Exchange
Administrators may enable security groups on premises as distribution groups.  [PS] C:>Get-DistributionGroup BlogSecurityGroup Name              DisplayName       GroupType                  PrimarySmtpAddress ----              ----------- ...

Keep on reading: Office 365: Mail disable an on premises security group…

Posted in Exchange

April 29th, 2018 by Exchange
In certain support circumstances it may become necessary to hard delete an Azure Active Directory account.  When the user has a mailbox that has been migrated to Exchange Online additional steps may be required to restore mailbox access. It is important to note that hard deleting an account should not be a common place operation.  There can potentially be significant impacts to the other services that are linked to an account – for example Sharepoint Online site ownerships / permiss...

Keep on reading: Office 365: Resetting a migrated users Azure Active Directory account….

Posted in Exchange

April 24th, 2018 by Exchange
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 feedback from customers and partners concerned about this change, we are announcing additional time for customers to prepare. The new date for discontinuation will be April 30, 2019. Customers with existing deployments remain fully supported until this date. However, Microsoft strongly advises all...

Keep on reading: New date for discontinuation of support for Session Border Controllers in Exchange Online Unified Messaging

Posted in Exchange

April 23rd, 2018 by Exchange
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, we are glad to announce that Exchange Online now officially supports public folder hierarchies of up to 500K public folders in the cloud – double the previously supported limit of 250K public folders! What does this mean? All existing customers using Exchange Online who are currently constrained ...

Keep on reading: Announcing the increase of the Public Folder limit in Exchange Online from 250,000 to 500,000 folders

Posted in Exchange

April 22nd, 2018 by Exchange
In todays connected environments there are several applications that send email through designated internal relay servers.  The messages may originate from application servers that generate notifications, scans from multifunction printers, or other network connected devices.  An excellent target for internal relay servers are the hybrid servers implemented for Office 365 integration or any Exchange 2010 or newer server.  In some installations a connector is created that allows f...

Keep on reading: Office 365: Trusting application emails sent through internal relay…

Posted in Exchange

April 20th, 2018 by Exchange
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 email clients, third-party software and services, and devices such as multi-function printers. Changes that we’re making to how this protocol works in...

Keep on reading: Changes coming to the SMTP Authenticated Submission client protocol

Posted in Exchange

April 10th, 2018 by Exchange
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 planning. What does end of support mean? Exchange Server, like almost all Microsoft products, has a support lifecycle during which we provide new features, bug fixes, security fixes, and so on. This lifecycle typically lasts 10 years from the date of the product’s initial release, and the end of th...

Keep on reading: Exchange 2010 End of Support Is Coming

Posted in Exchange

April 10th, 2018 by Exchange
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 Update Guide. For Exchange Server 2013, critical updates will include any required product updates due to time zone definition changes. Microsoft Product Lifecycle Policy (http://aka.ms/lifecycle) With the transition of Exchange Server 2013 to Extended Support, the quarterly release schedule of cu...

Keep on reading: Exchange Server 2013 Enters Extended Support Lifecycle Phase

Posted in Exchange