Use Microsoft Exchange Online and Microsoft 365 or Office 365 to manage mail flow. Write down the primary SMTP address for a selected user in Exchange Online (if you do not have an Exchange Online license, you can take this. Existing Exchange Hybrid customers should use Hybrid Modern Auth. This made it so that when an external email went through our Exchange Server which serves as a relay, the email address existed and allowed it to then go to Office 365. For a successful migration, a configured and working Hybrid configuration must be in place between your source Exchange environment and the Microsoft 365 tenant. If you create the mailbox directly in Exchange Online, you will get mail flow issues. 1. There are two ways to create a user mailbox in. For this to operate successfully the mailbox needs to be in Office 365, and in the ‘owning’ Exchange on-premises forest, the email domain needs to be set to internal relay. Navigate to Users and select Active users. Log off and back in again once the install successfully completes. Sync_nameofserver_longrandomenumber) Go to portal. If your organization uses a hybrid Exchange environment, you need to manage your mailboxes by using the on-premises Exchange management tools. Mailbox migration from Exchange Server to Microsoft 365 (Office 365) can be a huge and stressful task, especially if your organization has been stuck with the on-premises environment for many years. Admins often provision hybrid user accounts incorrectly, and sometimes this needs to be cleaned up after the fact. At the bottom of the Product licenses pane, click Save. Now I can send an email from A to B. Microsoft 365 hybrid delegation requires a specific configuration in the cloud and in the on-premises Active Directory Domain Services (AD DS) environment. Yes, removing the last Exchange Server from a Hybrid environment is now possible. Spice (13) Reply (10) flag Report. Just make sure you can send mail from an on-premises mailbox and receive it in the cloud, and vice-versa. Thanks @Ashok M anonymous userDavid @Lucas Liu-MSFT - All . As mentioned in the previous article, the subject of Exchange permissions relationship in Exchange Hybrid environment can be realized in two major scenarios: Scenario 1 – Cross site permission. Our recommendation is to create the journaling rule in both Exchange Online and Exchange Server and point them to the same journal recipient. 0, to authenticate and access user calendars. To ensure these prerequisites are met, we suggest working through the following checklist. You need to make sure you have your onprem exchange AD attributes synced to exchange online. Customers need to install and configure ADFS in the environment to allow Exchange clients to use Forms authentication (OAuth) to connect. This. We also create our mailboxes first at on prem and then migrate it to EXO. Exchange on-premises calendar could not be updated. Record the accepted domain of the domain that looks like domain. The pre-requirements of Exchange hybrid environment; Best practices and recommendation for the required preparations; Tools and methods that will help us to check and verify if the on-Premises environment was configured correctly. We currently have a hybrid on-prem/Office 365 environment. You should create the mailbox on-premise so that the object exists in Active Directory (AD) and it contains the Exchange attributes which is. To update a hybrid configuration setting after you initially configured hybrid, you can use the Hybrid Configuration wizard or the Exchange Management Shell. To make this change, you need to navigate to From there, expand the list to see all options. Then use this request to apply for a new certificate from a certification authority. Jun 2022 - Jan 2023 8 months. DDP. There is no difference between hybrid and on-prems. Certificates also help to ensure that each Exchange organization is communicating to the right source. Collapsing an Exchange Resource Forest. Certificates enable each Exchange organization to trust the identity of another. Aside from redirection and the availability of Exchange end. All messages sent from my on-premises servers must. Create new Remote Shared Mailboxes from hybrid. 1. Then use this request to apply for a new certificate from a certification authority. From the Exchange on-premise interface, we can create “remote mailbox” for users, Resources or Rooms. Deleting any Exchange 2013. Add anonymous SMTP relay connector. Overall, I found that having an Exchange Server on-site is the best practice per Microsoft in a hybrid Office 365 environment. Our Exchange is on-prem. In a Microsoft Exchange Server hybrid deployment, a user may have a mailbox in both Exchange Online and an Exchange on-premises organization. Run the new hybrid configuration wizard. Original KB number: 10094 . We have an AD user who appears in both AD and Office 365, is licensed, who has their own mailbox. Mailbox permissions supported in hybrid environments. Exchange Online, and other Microsoft 365 services interact correctly with your on-premises environment. Users in both organizations can view each other's calendars as if they were located in the same physical organization. Enabling Hybrid Modern Authentication. Preparing our on-premises Exchange servers for hybrid Mode. migrate only the latest mailbox items for quick migrations. ps1 removes). Lurch. A Hybrid Exchange environment allows you to take your local environment and the cloud environment together as a single mail organization. Is there a way to add an additional Exchange 2016 server into a production environment without any disruption to the production Outlook 2016 environment. Also, as with any service, deploying it and configuring the Hybrid role might. Create an EAS device access rule in Exchange Online that allows connections from Outlook for iOS and Outlook for Android. Because of this known issue I found below, if we create a shared mailbox directly in Exchange online, it will may cause the following problems. Select Group writeback and then click Next. 2. I have an hybrid Exchange environment everything is running ok, but now I am starting to take on the task of eliminating the public folders which are in the on-prem Exchange server (2010) and recreate them in O365 or delete them. What is correct way to create shared mailbox in hybrid environment. Here's why: if you convert the mailbox in the cloud. However, because the user interface, the Exchange Admin Center, is part of Exchange Server, it. EXO Powershell is a very different thing, and connect you to your "Office 365 / Cloud" Exchange environment. I want to use the filtering and compliance solutions that are already in my on-premises email environment. In Exchange Hybrid environment, the. A word of warning first. In some hybrid scenarios, additional steps are required for auto-mapping to work. If the response is helpful, please click "Accept Answer" and upvote it. Open ADSIEdit. If the above is possible, can. Describe the key planning options when designing a hybrid SharePoint environment. Hi @Namless Shelter , agree with the troubleshooting steps provided above to your question. In our example, it’s Outbound to Office 365 – d1c9beac-0655-48e7-9949-5e497af1d38d. Hybrid, global work requires structural changes to how we build and interact with applications. Hello Lan, Since you mentioned you are in Exchange Hybrid environment, for this case the on-premises users and online users are sharing the same GAL also called shared address book, however only the mailbox was synced or migrated from local Exchange to Exchange online, both side users then could see the shared GAL for all. . It also. (Select this type even if you are preparing a hybrid Exchange on-premises and Office 365 integration. Turning on HMA means: Being sure you meet the prereqs before you begin. Please make sure that your DNS records are set up correctly, especially SPF records. Azure Authentication Service - The Azure Active Directory (AD) authentication Service is a free cloud-based service that acts as the trust broker between your on-premises Exchange organization and the. 3. Inbound emails are successfully flowing through Office 365 to our on-premise Exchange mailboxes. Then you could send test email to test the mail flow. Find Exchange Server version. Fill out the user information as you. Microsoft released Exchange Server 2019 Cumulative Update 12, which allows you to remove your last Exchange Server so that you can run Active Directory with Azure AD Connect and manage Exchange-related attributes in a supported way. In our example, it’s groups. In a Hybrid environment, mail contact is created in Exchange Onprem and it is syncing in Exchange Online as "User Mailbox". Are you thinking about moving your. Follow these steps: Step 1. onmicrosoft. The migrated Office 365 user mailboxes should have mail user objects represented on-premises, the on-premise server should see them as Remote mailboxes. When certificates needs to be renewed or changed on (on-premise) Exchange server’s, and you have Microsoft 365 hybrid setup though Hybrid Configuration Wizard, a Office 365 connecter is setup as send and receive: Receive: Send: If you try to delete the old certificate, without setting the new cert for the connectors, you will get this. Select the user in question, locate the Product Licenses field and click Edit. Fill in the required fields: Name. com -User UserName. Show less Digital Operations Manager Railhead, Inc. It allows you to connect your mailboxes, calendar, contacts, and more to Office 365, while also connecting your Active Directory (AD) to Office 365. I noticed several recurring errors in the application log of the on-premises exchange server. Download and run the downloaded HCW exe file. g. Set new certificate for server authentication. You can also add new email address to those mailboxes manually. This permission enables the Hybrid Calendar to get access tokens from Azure Active Directory (Azure AD) using OAuth 2. 2. A Multi-Forest Hybrid Exchange scenario is complicated and requires extensive planning. A hybrid environment is a powerful way to connect all of a company’s employees in a single consolidated e-mail system, Microsoft Exchange Online users and. In this Centralized Mail Flow Setup, once EOP received the mails, it does the scanning of the mails for Anti-Malware and Viruses. To check a server's SSL/TLS configuration, use the Microsoft SSL Server Test. As much as the haze has cleared around many elements of hybrid work, there’s still a. Click Yes on the warning prompt to proceed with the conversion. After you renew the certificate, you could run the commands provide by Andy to set the certificate bound to the sender connector. Over a series of upcoming articles, I’ll walk through a Hybrid Exchange deployment scenario for an example organization. Yes. “Can’t receive mail in an Exchange 2013-based hybrid environment after you install a new certificate on the server (KB2989382)“. as i told currently my autodiscover is pointing to Exchange online in external DNS and Thanks for correcting me to have a autodiscover point to onprem exchange server in a hybrid environment. Exchange 2007 can be migrated via Hybrid, but a 2010 server must be deployed first. Re-point your organization’s MX record to the Office 365 service if it is pointing to the on-premises organization. last week our third party ssl certificate has expired. Do this before you begin any. Change the name here. Logged in on the Tablet Device by using Room username and password. Remote into your On-premise Exchange server. It’s essential to have an Exchange Hybrid architecture view before running the Exchange Hybrid Configuration Wizard. Office 365 Exchange Online is pretty simple to manage if you are a “cloud-only” organization. Enable - ExchangeCertificate - Thumbprint "The Certificate Thumbprint" - Services SMTP. Exchange Hybrid. The “New” Exchange On-Premise Hybrid server can implement as Exchange 2010 or Exchange 2013 but, the best practice is to install Exchange 2013 server instead Exchange 2010 because. If you are removing Exchange and don’t point the MX record to Office 365, inbound Internet mail flow won’t function. 1). The Webex cloud does not. Hi we have a hybrid Exchange Environment with Exchange Server 2019 (recently migrated from 2013) i have a group of users in a DG which are able to send as this certain DG when choosing "From" in Outlook via. Navigate to Mail Flow > Accepted Domains. On-premises Exchange server version in your environment. If you haven't prepared Active Directory for Exchange, mail-related attributes of groups won't be. [deleted] • 5 yr. Follow these steps: Step 1. If not, re-run the Hybrid Configuration Wizard again, and also check the setting for your email. Users can send, receive and reply to emails to other users regardless whether their mailbox is on-premises or online. We recommend installing the latest Exchange Server version as the one that is running in the organization. Enable Self-Service Password Reset in Azure AD. For the Outlook F/B error, we need to first enable Outlook logging and after this we will need to reproduce the issue (). When Outlook for iOS and Android is enabled with hybrid Modern Authentication, the connection flow is as follows. This person is a verified professional. Open a browser and login to the Office 365 Exchange Admin Center > hybrid. In addition to headers, default hybrid configuration also grants your Exchange Online tenant the ability to relay from the cloud via your on-premises Exchange server. 10/24/2023 11 contributors Feedback Sharing free/busy (also known as calendar availability) information between users in on-premises Exchange and Exchange Online is one of the. msc, and then select OK. Apr 3rd, 2022 at 7:01 PM. Click on Add domain. Hybrid Exchange deployments offer flexibility between on-prem servers and Microsoft 365 while maintaining the look and feel of a single Exchange organization. Azure hybrid services range from virtualized hardware that hosts traditional IT apps and databases to integrated platform as a service (PaaS) solutions. From a short presentation on everything you need to know. First of all, I am aware that it is recommended to have an on prem server in an hybrid environment. Collect information. Adding Domains (accepted Domains) to the Office 365 Tenant. Microsoft Exchange. In this Centralized Mail Flow Setup, once EOP received the mails, it does the scanning of the mails for Anti-Malware and Viruses. In a hybrid deployment, your users can be in Exchange Online, on-premises, or both, and your public folders are either in Exchange Online or on-premises. Even better, when you want multiple Exchange Hybrid Servers – and you want for availability. Exchange Reporter Plus can help report on, audit, and monitor your hybrid Exchange environment until your migration is complete, at zero. This article describes the necessary configuration, administration details, and known issues. The correct way (or the least troublesome way) to create a new user with O365 hybrid exchange, login to the hybrid exchange's ECM, Under Recipients, Mailboxes, hit the Plus drop down,. 3. When configured properly, can provide almost seamless coexistence between Exchange Online and your on-premises Exchange environment. While it is possible to install the Mailbox and Client Access roles on separate servers, we strongly recommend that you install both roles on the. Office 365 Hybrid is shorthand way of referring to a hybrid cloud Exchange environment in which your organization's Office 365 and on-premises (or on-prem) servers coexist. Follow the steps in that article if you have an Exchange on-premises environment or an Exchange Hybrid environment with mailboxes located on-premises. Based on my experience, to renew or replace the certificate are both supported in Exchange hybrid environment. 1. I have hybrid Exchange environment. Copy the Thumbprint. Microsoft certifications relating to the support of Microsoft technologies (MCSA, MCSE) and Exchange,. Apply filters to e. The next step i perform is the creation of a mailbox onprem in exchange for the user i have created. Your organization needs to decide which mail flow rules will be active in which environment and how the message routing configuration you choose affects those transport rules. In this article, I’ll prepare my Exchange organization for Hybrid deployment. Click on the Modern Authentication link. Spice (1) flag Report. 2nd question: No impact. Summary: Instructions for enabling Exchange Online users to access on-premises public folders in your Exchange 2013, Exchange 2016, or Exchange 2019 environment. 2 years: Managing a Microsoft Exchange server hybrid environment at an enterprise level; working knowledge of Microsoft Exchange online, O365, and Azure preferred. Removing and disposing of the Exchange 2013 environment’s physical equipment. Hi, the last couple fo days the question how to create a new user in a hybrid exchange environment is floating around in my head. Ultimate cloud cover protection against cloud phishing. Reviewer Function: Sales and Business Development. My Goal is to install a VM Exchange 2019 and decommission. A hybrid environment is set up between Exchange on-premises and Office 365. It is important to note though: You. Find out how, and get tips and best practices for setting up and managing your email. Use the AutoDiscoverServiceInternalUri parameter to null the autodiscover internal URL. To renew a certificate that was issued by a CA, you create a certificate renewal request, and then you send the request to the CA. ago. com. Add-RecipientPermission -Identity "SharedMailbox" -Trustee UserWhoNeedsSendAs -AccessRights SendAs. 1. Enabling Hybrid Modern Authentication. Problem In a hybrid Exchange environment, the Join button does not appear on any premises-registered device. The most common use case for hybrid environments is with organizations migrating the mailboxes group by group to Microsoft 365 . The most commonly-selected options are Exchange hybrid and Password hash synchronization. To convert a mailbox in a hybrid environment, you might need to move the mailbox back to on-premises Exchange, convert the mailbox type, and then move it back to Microsoft 365 or. Hi. I have successfully added Company B's domain to Azure AD Connect running within Company A's environment, so both Company's domains are being published to Company A's O365 tenant. Run Exchange Management Shell as administrator. In there, you’ll need to find the Appld required to remove the hybrid agent. Using this option will create the AD User AND the Mail-enabled user (MEU) object with the remote routing address (such as jsmith. Exchange management: The familiar tools used for managing on-premises Exchange infrastructure, such as the Exchange Admin Center (EAC) or PowerShell, can continue to be used in hybrid deployments. With hybrid transport, messages sent between recipients in either organization are authenticated, encrypted, and transferred using Transport Layer Security (TLS). It is best that you leverage the Exchange Management Shell to move to the C:Program FilesMicrosoft Hybrid Service folder. If you have a full hybrid environment, this should already be the case. 2 is misconfigured. This is the recommendation from Microsoft and CISA, and marks the “completion” of turning off Exchange ActiveSync. 10 Replies. Get UserName. 2. onmicrosoft. com email address. Recover the user first, then the mailbox. Sometimes in a hybrid environment, when Exchange Online (Office 365) users try to open their on-premises calendar, they may face issues. Click on the Add option. There is no difference between hybrid and on-prems. psm1. Starting out with the Hybrid Management Tool. Yes, removing the last Exchange Server from a Hybrid environment is now possible. Post validation, Exchange Online back to On-Premises Smart Host based on the connectors configured. Troubleshoot migration issues in Exchange Server hybrid environment . Select the Migration option. A hybrid environment is set up between Exchange on-premises and Office 365. Currently my public dns. In an Exchange hybrid scenario, Autodiscover points to your on-premises Exchange environment (i. Step 1. I've recently inherited a hybrid exchange environment with Exchange 2010 and there was an issue with a Resource mailbox that was migrated to the cloud. If you had previously executed . The current on-premises environment is running: 2 x Exchange 2016 Mailbox servers; 1. Mailboxes work correctly. Select the mailbox that you want to convert and click the Convert link under the Convert to Shared Mailbox heading in the right pane. Users can't send mail to the shared mailbox. Summary: How to manage mail flow in an Exchange hybrid environment, which is when some mailboxes are on-premises and some are in Microsoft 365 or Office 365. They can receive internal emails sent from our @domain. You learned how to manage Exchange Hybrid. In a hybrid Exchange environment, user accounts are created on-premises, but then licensed through the Office 365 portal (to enable mailbox access). I suspect that this is not supported but i dont now how to fix it. The Exchange permissions that Exchange on-Premises mailbox can have on cloud mailbox and vice versa. To check the hybrid configuration of your Exchange, simply open the Exchange admin center and navigate. Select the version of the on-premises Exchange server that matches your environment: Exchange 2010/2013; Exchange 2007; Exchange 2003; The Exchange 2010/2013 free/busy workflow With hybrid transport, messages sent between recipients in either organization are authenticated, encrypted, and transferred using Transport Layer Security (TLS). mail. Microsoft has done a great job of ensuring that hybrid Exchange Online/Office 365 tenants have almost all of the features and functionality of on-premises Exchange Server deployments, without the need for running and maintaining their own servers. Did you enjoy this. In a hybrid deployment, in order to show Office 365 mailboxes in on-premise’s GAL, I suggest you create a new mailbox by performing the following steps: 1. John’s mailbox is moved to the cloud. Enter credentials for both the on-premises organization and the Office 365 tenant. We deploy hybrid exchange using the HCW, AADC has been deployed as well. You have a hybrid deployment of on-premises Microsoft Exchange Server and Microsoft Exchange Online in Microsoft 365. If your organization has moved all mailboxes to Office 365 and is in a Hybrid environment,. Issue #5: Use Of A Third-Party SMTP Gateway. Exchange Federation Trust (EFT) and a self-signed federation certificate are automatically created when you use Hybrid Configuration Wizard (HCW) to set up a hybrid Exchange environment between your on-premises Exchange Server and Office 365 or Microsoft 365 (Exchange Online). The Autodiscover service minimizes user configuration and deployment steps by providing clients access to Exchange features. If you create the mailbox directly in Exchange Online, you will get mail flow issues. The. To create new user accounts in the Microsoft 365 admin center, see Add users individually. For on-premises mailbox few settings need to be configured, we will consider that Secure Email Gateway (SEG) is used as it is. GENERAL TAB: Display Name, Last (or First) Name, Email. Also, you can check Hybrid Migration for more help. Run Enable-MailUser cmdlet to mail-enable the user that isn’t already mail-enabled (Exchange on-premises). Create and automatically match source and target mailboxes. Add your hybrid domain to Active Directory with the following steps using. In this course, you will learn how to install, configure and manage Exchange Hybrid. My advice is to synchronize everything, unless you are absolutely sure you don't need specific objects to be known to Office 365; excluding things from directory synchronization can bite you back later in. thai pepper. The Set-AuthConfig parameter defines Microsoft Exchange as a partner application for server-to-server authentication with other partner applications such as Microsoft SharePoint 2013 and Microsoft Lync 2013 or Skype for Business Server 2015. So it will download and install a free Exchange Hybrid license. Fill in the groups domain. We have a number of distribution groups in AD that sync with 365. Azure offers several hybrid solutions that can host applications and workloads, extend Azure services, and provide security and operational tooling for hybrid environments. In the Power Platform admin center, select an environment. We have a hybrid exchange environment, and our AD syncs with Azure AD and Office 365. All message traffic that passes through an Exchange deployment will be evaluated by the. However, there is still one major gap companies consistently run into as they move to a hybrid Exchange Online/Office 365 environment: distribution list (DL) management. Yes. The consultant we used added a Hybrid 2010 Exchange server as well. com) and when a mailbox is moved to Exchange Online the Outlook client will find a target address pointing to Exchange Online. Please run the command below to check the permissions granted to the owners. Sync the new user account from local AD to Office 365 3. The following list discusses the different permissions and how they work in a hybrid deployment. In a Hybrid deployment, we usually have some mailboxes in Exchange On-Premises and some mailboxes in Exchange Online (users are in different premises) and this has to work there too. With an Exchange-based hybrid deployment, you can choose to either move on-premises Exchange mailboxes to the Exchange Online organization or move Exchange Online mailboxes to the Exchange organization. In hybrid Exchange Online/Office 365 environments, DLs are created on premises and synchronized with Azure Active Directory (Azure AD) through DirSync so that users with. On the Writeback page, select an Active Directory organizational unit (OU) to store objects that are synchronized from Microsoft 365 or Office 365 to your on-premises organization, and then click Next. Since many prerequisites are common for both Skype for Business and Exchange, Hybrid Modern Authentication overview and prerequisites for using it with on-premises Skype for Business and Exchange servers. They are because you are using Azure ADConnect to sync your on. So I have a mail enabled public folder in my on-prem environment. The message path differs depending on whether you choose to. If Both does not match, match them using below in Exchange Server Shell:-. We are aware of steps to update the certificate. On Outbound spam policy allows us to set a limit and we can target a mail enabled group to apply to specific users. I have migrated all mailboxes to the cloud and changed Autodiscover and DNS to point to Office 365, mail flow is working fine. Your Active Directory. To synchronize the two environments, take the following steps: From the Exchange Admin Center, launch the Hybrid Configuration Wizard. For the Type, select Exchange On-Premises for Exchange 2013, 2016, or 2019. Autodiscover. It’s also one of the tasks of the Exchange Hybrid test plan checklist. The hybrid environment is based on the concept in which two separated Exchange organization operates as one entity. com and send emails to external. To check the TLS configuration in Exchange Server, use the Exchange Server Health Checker. Other Exchange Reports: Monitor other Exchange Online features like shared mailboxes, room mailboxes, public folders, distribution lists, and calendars. It shows up in the Admin Portal under Recipients -> Resources as ConferenceRoom1 and the mailbox Type is set to Room. Import this new certificate to Exchange server to complete this new certificate request. A hybrid Exchange migration keeps some mailboxes on-premises while others are moved to Exchange Online, which allows a phased migration approach. Copy the Outbound to Office 365 send connector name. Hybrid Exchange Demonstration. But, for those of us who are still. Office 365 Hybrid Configuration is a deployment model that enables coexistence and collaboration between an on-premises Microsoft Exchange Server environment and Exchange Online, which is the. November 7, 2023. 1. Hybrid Exchange migration to Office 365 can be a good option if: You have several mailboxes to migrate and want to maintain your users’ productivity. Since you mention HCW indicating this is an hybrid Exchange environment, it may be worth mentioning enabling Exchange Hybrid in Azure AD Connect to ensure Exchange attributes for moved mailboxes (and accounts) are synchronized as well. You assign Full Access permissions to one or more users. The difference between Minimal and Express is the directory synchronization process. If the response is helpful, please click " Accept Answer " and upvote it. . You do not need to create a second tenant. To diagnose free/busy issues in Outlook and Outlook on the web, see Demystifying hybrid free/busy and Free/busy sharing fails if TLS 1. At this moment we use a backup tool to backup/restore at mail brick level. There are both advantages and disadvantages to creating an Exchange hybrid environment. Use Exchange Management Shell, Exchange Online PowerShell, Exchange admin center, Exchange admin center in Exchange Online, and Microsoft 365 admin center for all the tasks. Make sure the appropriate permissions. Since many prerequisites are common for both Skype for Business and Exchange, Hybrid Modern Authentication overview and prerequisites for using it with on-premises Skype for Business and Exchange servers. If your organization uses a hybrid Exchange environment, you should use the on-premises Exchange admin center (EAC) to create and manage shared mailboxes. Your organization needs to decide which mail flow rules will be active in which environment and how the message routing configuration you choose affects those transport rules. Identify Exchange Online mailbox. It is the best practice for two main reasons. 450 4. As I understand, all you have to do is populate the email field & proxyaddresses attribute, sync, assign E3. We are using hybrid exchange 2013 and Office 365 environment with edge transport server. (i. SMTP relay is currently being provided on the on-prem server for internal and external email, but we want to minimize the footprint of the on-prem server to a management platform only for security conserns and use M365 smtp relay. We have Office 365 and all our autodiscover records in DNS points to Exchange Online. cer - Encoding byte - ReadCount 0)) Then, you enable the Exchange Certificate to be used for SMTP: 1.