Exchange Configuration and Management: Administrator Guides

In some cases, Outlook clients may stop updating the Exchange Global or Offline Address Book with the error “Outlook cannot update Global Address Book 0x80200049” or 0x80070057. You can add…

An email system based on on-premises Exchange Server or Exchange Online (Microsoft 365) allows an administrator to block (reject) e-mails from specific external domains or sender addresses. There are several…

Outlook mailbox rules allow users to configure different conditions for processing incoming e-mail messages in the Inbox folder. You can use Outlook rules to move e-mails from specific senders to…

Multiple users can access a shared mailbox in Exchange. Unlike a common user mailbox, a shared mailbox account is disabled in Active Directory and cannot be used for interactive sign-in.…

In this article, we will show you how to find duplicate SMTP addresses in your Exchange Server organization. If your organization has non-unique SMTP addresses, Exchange returns an error when…

In on-premises Exchange Server and Microsoft 365 (Exchange Online), you can grant users permission to send e-mails on behalf of another user or mailbox. In this article, we will show…

Modern versions of Outlook (starting with Outlook 2016) don’t allow you to manually configure a connection to a mailbox hosted on Exchange Server or Exchange Online (Microsoft 365). Microsoft developers…

In this article, we’ll show you how to properly put an Exchange Server 2019/2016 host into maintenance mode. You must put your Database Availability Group (DAG) into maintenance mode if…

An automatic reply feature (Auto-Reply, Out of Office Message/OOF) allows an Exchange user to configure a rule in their mailbox to automatically send a specific message in reply to all…

In this article, we’ll look at how to manage calendar permissions in on-premises Exchange Server and Microsoft 365 mailboxes using Outlook and PowerShell. We will also focus on the topic…