Microsoft released Cumulative Update 9 for Exchange Server 2019 (KB4602570) on March 16, 2021. Also known as Exchange Server 2019 CU9. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These…
Microsoft released Cumulative Update 8 for Exchange Server 2019 (KB4588885) on December 15, 2020. Also known as Exchange Server 2019 CU8. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These…
An Exchange Server is already up and running in the organization. Before installing a second Exchange Server, it's good to go to the drawing board. Exchange high availability namespace design and planning is by far the most crucial task. Take…
When you sent a message, a header will apply to the message. Most don't know that the message header will tell the recipient more information than you think. For security reasons, you can remove Exchange internal hostnames and IP addresses…
How to move arbitration mailboxes in Exchange Server 2010/2013/2016/2019? I recommend you move the arbitration mailboxes to the highest Exchange Server version in the organization. If you install the same Exchange Server version, you don't have to move the arbitration…
What to do after running the Hybrid Configuration Wizard (HCW)? After running HCW, the on-premises Exchange environment is configured with Office 365. Is there an Exchange Hybrid test plan checklist, or can we start migrating the on-premises items to Office…
How to install FREE Let's Encrypt certificate in Exchange Server? After configuring the internal and external DNS, we like to install a certificate in the Exchange Server. What is Let's Encrypt, and why is it free in the first place?…
We need to export a mailbox to PST file. The problem is that we are getting an error after running the New-MailboxExportRequest cmdlet. The term 'New-MailboxExportRequest' is not recognized as the name of a cmdlet, function, script file, or operable…
Users can't send an attachment in Outlook Web Access. A notification shows that the files weren't attached because it would cause the message to exceed the maximum size limit of 10 MB. Why are users getting Exchange message size limit,…
We like to export mailbox permissions to CSV file in Exchange Server. That's because the company is merging with another company, and they asked us to check every mailbox permission. These are the mailboxes and the shared mailboxes permissions. We…