Create Office 365 Safe Attachments Policy and Safe attachment Rule using PowerShell To get started with creating the Safe attachment policy and safe attachment rule a connection to Exchange Online Protection needs to be established. To establish a connection to Exchange Online Protection (EOP), follow the below. $UserCredential = Get-Credential $Session = New-PSSession -ConfigurationName Microsoft.Exchange…
Configure the external postmaster address in Exchange Online The external postmaster address is used to send notification messages to senders outside of your Exchange Online organisation. External senders are a sender with a domain that is not part of your accepted domain in your organisation. The default setting in Exchange Online for the postmaster address…
Get-AzureADDirectorySettingTemplate : The term ‘Get-AzureADDirectorySettingTemplate’ is not recognized. You receive the following error when trying to execute the following cmdlet: Get-AzureADDirectorySettingTemplate. To resolve this error, you need to install the following PowerShell Module AzureADPreview. But you will find that users have installed the PowerShell Module AzureAD and this Module does not have the cmdlets for…
Office 365 Hybrid Emails Stuck in Queue: target host responded 421.4.4.1 connection timed out mail-onmicroosft.mail.protecion.outlook.com. You receive the following error after running the Hybrid Configuration wizard, all emails are building up in the Exchange Queue. To resolve this issue, follow the below steps. Make sure that the all your exchange servers are added to the…
Exchange 2016 Uninstall Fails on Mailbox Server Role: Client Access Service Recently I battled with this headache of an Uninstall of an Exchange 2016 server. In the Exchange Install Logs this is the error that you are seeing. ERROR ( message:Cannot find GLOBAL MODULE object with identifier “exppw:) To resolve this error, you can follow…
Exchange Transport Service Fails to Start After moving the Exchange Queue Database, the Transport service fails to start and you receive the following error in Event viewer. To resolve this error, we need to make sure that the folder where the new Queue DB is located has the correct permissions. The folder for the queue…
Exchange Transport is rejecting submissions because the available disk space has dropped below the configured threshold. Microsoft Exchange Server makes use of back pressure monitor systems to prevent Exchange Server from being overwhelmed by the volume of incoming messages. What is Back pressure? Back pressure is a system resource monitoring feature of the Microsoft Exchange…
How to Enable Mailbox Auditing in Office 365 By default, all non-owner access and administrative actions are recorded, but owner actions are not. Enabling mailbox auditing will include owner activity in the audit records, which will in turn enable you to investigate and scope a compromise of that user’s account. To enable auditing, The Microsoft…
User receive the following NDR trying to send email from Exchange Online: 550 5.1.8 Access denied, bad outbound sender. If you receive the following error, then it means that your account has been sending out too much spam and has been blocked from sending emails. Typically, this problem occurs because the users account has been…
How to Export Office 365 Group Members using PowerShell. In this post, we will look at how to quickly export the Membership of an Office 365 Group. To get Started we need to connect to Office 365 PowerShell, the following script can be used to connect HERE. Once you have a successful connection to Office…
Protect your Office 365 Tenant with Azure AD Risky Sign-Ins Microsoft Office 365 and Azure Active Directory provides some very Powerful tools related to security. These tools are what I call the CLOUD GEMS. (pot of gold under the rainbow) They are very useful when it comes to finding compromised accounts within your Office 365…
Block Office 365 Sign-In based on On-premise Active Directory Security Group. The purpose of this guide is the assist support staff to block access to multiple accounts that has been compromised. To get started, login to Azure Active Directory Portal. https://portal.azure.com 1 From the Main menu, click on Azure Active Directory on the left-hand side….