How to Exit Maintenance Mode on Exchange Server (Step-by-Step Guide)
After completing maintenance activities such as Cumulative Updates (CU), Security Updates (SU), hardware changes, or configuration tasks, the Exchange Server must be safely brought back into production. This process ensures that database activation is re-enabled, cluster resources are resumed, and mail flow is fully restored without causing service disruption in a Database Availability Group (DAG) […]
How to Put an Exchange Server into Maintenance Mode (Step-by-Step Guide)
Before performing Cumulative Updates (CU), Security Updates (SU), hardware upgrades, or any planned maintenance on a Microsoft Exchange Server, it is critical to properly place the server into Maintenance Mode. This ensures that mail flow is safely redirected, active database copies are moved to healthy DAG members, and no unexpected database activation occurs during maintenance. […]
Exchange Server 2019 and SE Prerequisites
Exchange Server Mailbox Server Role The Exchange Server prerequisites are well documented Desktop ExperienceInstall-WindowsFeature Server-Media-Foundation, NET-Framework-45-Core, NET-Framework-45-ASPNET, NET-WCF-HTTP-Activation45, NET-WCF-Pipe-Activation45, NET-WCF-TCP-Activation45, NET-WCF-TCP-PortSharing45, RPC-over-HTTP-proxy, RSAT-Clustering, RSAT-Clustering-CmdInterface, RSAT-Clustering-Mgmt, RSAT-Clustering-PowerShell, WAS-Process-Model, Web-Asp-Net45, Web-Basic-Auth, Web-Client-Auth, Web-Digest-Auth, Web-Dir-Browsing, Web-Dyn-Compression, Web-Http-Errors, Web-Http-Logging, Web-Http-Redirect, Web-Http-Tracing, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Metabase, Web-Mgmt-Console, Web-Mgmt-Service, Web-Net-Ext45, Web-Request-Monitor, Web-Server, Web-Stat-Compression, Web-Static-Content, Web-Windows-Auth, Web-WMI, Windows-Identity-Foundation, RSAT-ADDS Server CoreInstall-WindowsFeature Server-Media-Foundation, NET-Framework-45-Core, NET-Framework-45-ASPNET, NET-WCF-HTTP-Activation45, […]
Migrating Arbitration Mailbox To New Exchange Server
In Exchange Server environments, the Arbitration Mailbox is a special system mailbox used to store system-related data such as approval workflows, moderation data, and audit-related information. After a new Exchange Server installation, these system mailboxes must also be moved to the new server. Otherwise, arbitration and related system processes will continue to rely on the […]
Migrating Audit Log Mailbox To New Exchange Server
In Exchange Server environments, the Audit Log mailbox is a special system mailbox where administrative and audit records are stored. After a new Exchange Server installation, this mailbox must also be moved to the new server. Otherwise, the audit log records will remain on the old server. The process of moving the Audit Log mailbox […]
Exchange Server Disable POP3 or IMAP4 Services
You can shut down services using PowerShell with the following commands.
Exchange Server – Test SMTP Connection Without SSL Using PowerShell
PowerShell can be used to quickly check the functionality of the SMTP service in Exchange Server environments. Connections made without SSL/TLS, especially over port 25, can be easily tested using this method. The following PowerShell script allows you to send a test email to the specified SMTP server without using SSL.
TCPKeepAlive Not Set Error : Without this value the KeepAliveTime defaults to two hours, which can cause connectivity and performance issues between network devices such as firewalls and load balancers depending on their configuration
When reviewing Exchange Healtcheck reports, you may see a warning like the following Check TCP KeepAliveTime setting TCP KeepAliveTime Exchange TCP KeepAliveTime registry entry should be set to a decimal value between 900000 and 1800000 (15 to 30 minutes in milliseconds). If there’s no entry in the registry for KeepAliveTime then the default value is 2 hours. This value, […]
Microsoft Exchange Client Access Server Information Disclosure
The Microsoft Exchange Client Access Server Information Disclosure vulnerability, frequently found in Pentest and Tenable scans, is a vulnerability that can disclose some configuration or system information without additional interaction on the server. This makes it easier for attackers to gain prior knowledge about the system, allowing them to target other vulnerabilities. The recommended solution […]
MSMQ Windows Feature Installed True – This feature is no longer required and can be removed
It gives the following warning in HealthChecker reports on Exchange server, I will explain below how to fix this warning. Microsoft has the Requirements for the installation has updated Exchange Server 2019 and 2016. The Windows Message Queuing (MSMQ) feature is no longer required and can be uninstalled from the Exchange servers. With the automatic […]