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Cumulative Update 23 for Exchange Server 2013

This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. Known issues The Set-SendConnector cmdlet does not work for Exchange Server 2013 in hybrid scenarios that have a Edge server installed. For more information, see KB 4523519. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4502131 “TLS negotiation failed w

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Cumulative Update 2 for Exchange Server 2019

This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. Issues that this cumulative update fixes 4502134 Can’t get all the emails when searching mailbox by using an end date that’s different from today in Exchange Server 2019 4502135 Correct the error message that you receive when installing Exchange Server 2019 in an organization that has Exchange Server 2010 installed 4502154

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Cumulative Update 13 for Exchange Server 2016

This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in SETUP, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to e

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Azure Bastion – Jump Server as a Service

<h1>Azure Bastion – Jump Server as a Service</h1> <p>Azure Bastion is a new Azure Platform (PaaS) service, at this time is still in Preview, that allows to have RDP and SSH access to Virtual Machines inside a Virtual Network directly from the Azure Portal. This eliminates the need to expose the Virtual Machines RDP and SSH ports to the internet.</p> <p>The logic comes from the Jump Servers, but you don’t need to deploy any VMs and you don’t have to worry about the h

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Validate Azure Resource Move with Postman

Validate Azure Resource Move with Postman At this post we will see how easily we can move azure resources to new resource groups or subscriptions and how we can validate if the azure resources are eligible to move without initiate the move. Move Azure Resources to new resource groups or subscriptions Azure Resource Manager allow you to easily move resources to new resource groups or subscriptions. It is a pretty simple process. From the Azure Portal, open a Resource Group, and from the top optio

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Azure VM CMD & PowerShell from the Portal

Azure VM CMD & PowerShell from the Portal Today I was trying to troubleshoot an Azure VM. This VM is behind a Network Virtual Appliance (NVA) and at the subnet it has User Defined Routes (UDR) that routes the traffic to the NVA. We was troubleshooting the NVA and it was not possible to connect with RDP to the VM. Serial Console This is an excellent scenario to use the Serial Console. From the Azure Portal, portal.azure.com, navigate to the Azure VMs blade, scroll down to the Support + Troubl

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Azure Policy | Limit the Azure VM Sizes

Azure Policy | Limit the Azure VM Sizes Azure Governance This post, Azure Policy, is the first of a series of posts about Azure Governance. The idea is to explain through examples and how-to-guides, the tools that Microsoft Azure provides to help the administrators to enforce rules to all subscriptions. Some examples of those rules are, to help the organizations to stay compliant with their corporate standards, to standardize the resources creation and management, to manage the permissions and a

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How Autodiscover Works

One of the improvements in Exchange 2019 is that that the client configuration became more easier. This is caused because of several improvements in Autodiscover. The clients that connect via EWS usually are connected to the EWS Endpoint using Autodiscover. It is known that Autodiscover provides also information for other protocol connections also and it support also multiforest configurations. When Exchange server is installed a virtual directory called Autodiscover  is created. After the app

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New migration experience from Google G Suite announced!!

Hello to all!! Today Exchange Product Group announced a long-expected addition on Office 365. The ability to migrate G-Suite calendars and contacts to Office 365 with nothing more than Office 365 native tools. Currently there is a 2GB migration limit per day. This is a great step forward but there are many more things to come. Migration currently does not support Mail: Vacation Settings or Automatic reply settings as well as Filters or Rules Meeting Rooms: Room bookings Calendar: Shared

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Exchange Deployment Assistant site Updated!!!

Today Exchange Team announced the new and updated site for the Exchange Deployment Assistant – https://assistants.microsoft.com! . This is a expected move since all the assistants are moved under assistants.microsoft.com site, following the Microsoft move to  docs.microsoft.com . The new assistant focus solely on on-premises deployments. For online and hybrid scenarios, there are two different resources offering guidance: the EDA, and the Office 365 mail migration advisors. When you go to the n

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February 2019 Quarterly Exchange Updates

Today Exchange Team announce the  quarterly servicing updates, cumulative and update rollups, for all supported versions of Exchange Server. There are some important changes. What changes in Exchange Web Services Push Notifications The update to EWS Push Notifications is considered a critical security update and customers should deploy the update as soon as they understand and accept any potential impact. The change in Push Notification authentication is a permanent change to the product and n

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Azure Monitor for VMs – Health, Performance & Service Map

Get real insights about your Windows and Linux VMs & VMSSs performance and their dependencies with Azure Monitor. Integrate with Log Analytics for even more in depth analysis and retain the data over time. Health, Performance & Service Map of your VM in a dashboard. Deploy to Single VM For a single VM, go to the VMs blade, scroll down to the “Monitoring” section, select “Insights” and press “Try now” The Azure Monitor Insights Onboarding wizard will open. If your VM is already onboard

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Exchange Server serious vulnerability reported

A Security Researcher named Dirk-jan Mollema has recently discovered a vulnerability that affects Exchange and described a way that this vulnerability can be exploited to allow an attacker to obtain escalated privileges. The attack relies on two key components to be successful. Firstly by using a man-in-the-middle attack method against an Exchange Server to perform an NTLM relay attack ( an attacker intercepting the authentication process). This in itself isn’t actually an real Exch

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Configure The Azure Web Application Firewall

Azure Web Application Firewall (WAF) is a function of the Azure Application Gateway that detects and prevents exploits and attacks to a web application. Using a WAF we add an additional security layer in front of our application. To have a sneak peak at the most common web application attacks, take a look at the OWASP Top 10 Most Critical Web Application Security Risks . At my previous posts we have seen how to Protect your Web App using Azure Application Gateway Web Application Firewall and Use

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How to find who plays with Exchange Objects

One of the audit tasks that you may need to do while your operation on exchange server is how to find out by whom and when an Exchange Object was Created, Modified, or deleted mainly for troubleshooting purposes. You can easily do that using exchange management shell: Search-AdminAuditLog -ObjectIds “ObjectName” –StartDate  (date) –EndDate (date) Note: The ObjectIds parameter accepts a variety of objects, such as mailbox aliases, Send connector names, and so on. If you want to specify more

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Serverless Computing | Email Report Azure WAF Logs

At this post, we will create a Logic App that will query the Log Analytics workspace for the WAF logs of the last 24 hours and send the results in an email, using a free SendGrid account. A Web Application Firewall protects your application from common web vulnerabilities. Azure provides enterprise grade Web Application Firewall through the Application Gateway. You can read more at my previous post: https://www.e-apostolidis.gr/microsoft/azure/protect-your-web-application-with-azure-application-

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Exchange 2019 preferred architecture released!

Microsoft Exchange Team has released the official Exchange 2019 preferred architecture (PA) document. The document is updated with the new features of Exchange 2019 including the brand-new MetaCache Database (MCDB) feature and the increase in physical cores and memory limits. As always the document is a must for every admin that wishes to proceed to Exchange 2019 . You can donwload the document here.   Happy Reading!!!

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azure free smtp relay using sendgrid

Azure offers free smtp relay using the SendGrid application. SendGrid is a cloud service that provides email delivery and marketing campaigns. The specific offer is for up to 25.000 emails per month. Also this offers provides full reporting and analytics and 24/7 support. At this post we will see how to create a SendGrid free account that can be used for many purposes, like: Send emails through an application using the SendGrid API Send email campaigns, newsletters, etc using the SendGrid SM

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Leave an Azure Subscription – Directory

Working as a Cloud Consultant, Administrator, Architect, many companies will provide you guest (Azure AD B2B) access to their subscription. After completing the Admins of the subscriptions, many times, forget to remove this accesses and as a result you still have access to resources with no reason and also the list of your available subscriptions grows making it difficult to choose the right subscription to work. In this post we will walk through the steps of removing your account from those sub

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How to create Office 365 Signatures wite ease

Hello to all. Recently i stumbled in client request asking if there is a way  to centrally configure Signatures for the employees without the need of a 3rd party tool. Fortunately there is an easy way in Office 365 to do this. Here is how : 1) First of All you need to create a Transport Rule in EAC and choose to Build a Custom Rule 2) Then you need to define the disclaimer text to be included in the rule. The trick here that you can use HTML Tags therefore have fields that will be replace acc

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Disk gets full while migrating to Exchange 2016

A common issue when migrating to a new exchange version is the exhaustion of the log space resulting migration failures. Of course you can not simply go and delete those files because this will lead to more problems than the original one. One migitation to this problem is to run a full backup in order to clear the files and release the space.The other way is to enable circular logging which can be done before you start the migration in order to prevent the problem from happening in the first pl

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Exchange Server 2019 Now Available

Just now Exchange Product Group announced the availability of the long-awaited Exchange 2019!!!!. There are several new and exciting features in this release and its the first time that Microsoft recommends install into Server Core!!!. Here are some of the new features: 1) Exchange Server can use up to 48 processor cores and 256GB of RAM. 2) Dual storage read/write capabilities to Exchange Server 2019 using Solid State Drive (SSD) technology to provide a super-fast cache of key data for impr

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Create an Ultra High Available on-prem Azure VPN Connection

Create an Ultra High Available on-prem <-> Azure VPN Connection At this post we will see how to make a high available connection between our on-premises network and Azure. This way we will have an Active-Active Dual-Redundancy VPN Connection. The idea behind this is that we have a router/firewall cluster,connected with two ISPs and we want to also have a VPN connection with Azure using both ISPs actively. I call this an end-to-end high available connectivity between our on-premises infrast

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