It's often helpful when security researchers like Guardicore shed light on flaws in Microsoft Exchange - however, the Autodiscover protocol isn't flawed in the way they describe. Even though the issue is hard to replicate, it shouldn't distract from the work you need to do to protect your organization from the underlying reason why people want your credentials.
Many aging corporate networks were initially built to secure internet browsing traffic; however, this can create a slow user experience for those legitimately consuming cloud services. This article identifies contributing factors to network latency issues and the steps you can take to improve Office 365 service performance.
Performing the cut over of client access namespaces during a migration to Exchange Server 2016.
Emails sent using web forms on a website may not be received in the mailbox of the recipient due to a configuration or filtering issue.
I recently encountered a mail flow problem between two of my test lab environments that was being caused by the DNS configuration on the receiving server's network interface.
Learn how Sender Policy Framework (SPF) records work to prevent email spoofing, and how you can implement the correct SPF record for your domain.
How to use hosts files on client computers for Exchange Server testing and troubleshooting scenarios.
How to use the Resolve-DnsName PowerShell cmdlet to query MX records for multiple domain names at once.
How to manually configure the DNS servers used by Exchange Server 2013 for external lookups.
How to plan, test and implement changes to MX records and inbound email traffic routes in an Exchange Server environment.
In this article I explain just what an MX record is and how they play a role in a working email system.