Check that the domains that the application or device will send to have been verified. 2. Direct send allows each user in your organization to send email using their own address. Device or application server must support TLS, Microsoft 365 or Office 365 username and password required. If there is no connector listed from your organization's email server to Microsoft 365 or Office 365, create one: To start the wizard, click the plus symbol +. Office 365 User Provisioning Issue [Unable to create user’s mailbox]. Hello All, Long time reddit reader, first time poster. This tutorial will describe how to configure Postfix as a relay through Office 365 service, so using Exchange Online. Port: Port 587 (recommended) or port 25 is required and must be unblocked on your network. Yes, if the mail is destined for one of your Microsoft 365 or Office 365 mailboxes. Determine what version of TLS your device supports by checking the device guide or with the vendor. Connector: You must set up a connector in Exchange Online for email sent from your device or application. [For Sending an email to Internal users and External users], [For Sending an email to only Internal Users], [for Sending an email to Internal and External Users without TLS]. Office 365 User Validation Error [Failed to Sync the ArchiveGuid], How to set up Folder Redirection / Citrix User Profiles using FSLogix profile containers / Citrix User Profile Management (UPM) on Citrix Virtual Apps and Desktops 7.15, yourdomain-com.mail.protection.outlook.com, Not Required (Recommendation is to enable if this option is available), Not required (you can turn off SMTP Authentication), Use this option if you want to send the emails. Your device or application can send email using any address (including ones that can't receive mail), as long as the address uses one of your domains. You have a line-of-business (LOB) application that manages appointments, and you want to email reminders to clients of their appointment time. Doesn't require your device to support TLS. If you plan to keep your existing on premise exchange server then it can be used / utilized as a SMTP Relay server. Once A connector is configured then use below settings on the device to configure for SMTP Service. If you have senders who use a device or LOB application and those senders do not have Microsoft 365 or Office 365 mailbox licenses, obtain and assign an Exchange Online Protection license to each unlicensed sender. This eliminates the need for a specific user name and password login. To send email using Microsoft 365 or Office 365 SMTP relay, your device or application server must have a static IP address or address range. The finished string looks similar to this: v=spf1 ip4:10.5.3.2 include:spf.protection.outlook.com ~all. Skipping this step can cause email to be sent to recipients' junk mail folders. To configure your device or application, connect directly to Microsoft 365 or Office 365 using the SMTP AUTH client submission endpoint smtp.office365.com. Make a note of the MX record Points to address or value value, which we refer to as your MX endpoint. SMTP Auth must be Enabled on Organisation or Mailbox Level. ... “Your organization’s email server”, To: “Office 365” and click Next. Enter the following settings on the device or in the application directly. Licensing: SMTP relay doesn't use a specific Microsoft 365 or Office 365 mailbox to send email. It's easy to find your MX endpoint in Microsoft 365 or Office 365 if you need to look it up. Each device or application must be able to authenticate with Microsoft 365 or Office 365. SMTP (Simple Mail Transfer Protocol) is used when you set up an on-premises multi-function printer, scanner, fax, or line of business (LOB) application that needs to send email. To test the configuration, send a test email from your device or application, and confirm that it was received by the recipient. SMTP relay lets Microsoft 365 or Office 365 relay emails on your behalf by using a connector that's configured with your public IP address or a TLS certificate. Note that you cannot use Microsoft Security Defaults or multi-factor authentication (MFA), which disable basic authentication and are designed to protect your users from compromise. The Office 365 SMTP Relay requires an on-premise SMTP service, which in many cases is the last remaining on-premise Exchange 2010/2013 Server that is already used for managing the on-premise user accounts – this is best practice and highly recommended by Microsoft as the supported practice. This means that users must have their own licenses if they send email from devices or applications that are configured for SMTP relay. This method is not supported because of complexity and potential issues. Include the IP address that you noted in step 1. Your computer’s Trusted Platform Module has malfunctioned. Sent mail can be disrupted if your IP addresses are blocked by a spam list. 3. Once you meet all the above requirements and noted down the points. Upon following This article it looks like our best option would be to use option 3 as we require MFA for our accounts and also the ability to send to external users. Edit your sender policy framework (SPF) record. Question. For more information, see High-risk delivery pool for outbound messages. Please follow below instructions to create a connector: In my case you can see its blank, That means this setting is controlled by the corresponding SmtpClientAuthenticationDisabled parameter on the Set-TransportConfig cmdlet for the whole organization. The service can't be used to send spam or bulk mail. v=spf1 ip4:1.2.3.4 include:spf.protection.outlook,com -all. The MX record will have a Points to address or value value that looks similar to contoso-com.mail.protection.outlook.com. Direct send cannot be used to deliver email to external recipients, for example, recipients with Yahoo or Gmail addresses. Total Access Emailer sends its emails using Simple Mail Transfer Protocol (SMTP) which bypasses the limitation of Outlook MAPI (Messaging Application Programming Interface). You can start configuration of Direct Send SMTP Relay. Which should be more than efficient for most use cases. 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