Since about a month we cannot relay email from our IIS SMTP Relay to Office 365. This has worked for a long time, therefore I do not get why it is not.
I have installed SMTP Server and Telnet Client on my 2019 server, I have followed guides and rechecked my settings to ensure all is setup correctly. [General].
05.09.2019 · In this article, we will cover all of the steps needed to successfully set up an SMTP relay server to send an outgoing email with Office 365. Technically, we will use this SMTP relay to relay email to Office 365; it can just as quickly work for …
20.07.2015 · Configure Windows Server 2012 SMTP Relay. Go the the start screen and type “Server Manager”. In the Tools menu select “Internet Information Services (IIS) 6.0 Manager”. Expand the tree until [SMTP Virtual Server #1] is shown then right click and choose “Rename” (as appropriate) Right click again and choose “Properties”.
07.09.2021 · The Office 365 user is set to SMTP auth enabled and I have confirmed this via PowerShell. telnet 127.0.0.1 25 shows: 220 mydomain.com Microsoft ESMTP MAIL Service, Version: 10.0.17763.1697 ready at Tue, 7 Sep 2021 13:53:35 +1000. However, when trying to send an email via this relay it stays in the C:\inetpub\mailroot\Queue directory and I get ...
25.02.2015 · A Windows Server 2012 R2 Server that the machine or application that needs to email can access. Office 365 SMTP server address is smtp.office365.com; Install & Configure SMTP Server Feature. Open up Server Manager in your on premise Server. Go to Manage in the top right and click it. Choose Add Roles and Features
12.11.2021 · SMTP Relay vs Direct Send in Office 365. Before we take a look at how to set up SMTP Relay in Office 365, I first want to explain to you the difference between SMTP Relay and Direct Send. Because both use the MX endpoint as an SMTP server address, but they both have their own use case. Direct Send in Office 365 is used to deliver email to only ...
From Server Manager, select Tools > Internet Information Services (IIS) 6.0. · Expand the server under Internet Information Services. · Right-click SMTP Virtual ...
11.09.2019 · On-prem SMTP relay server received the message. Exchange Online Protection (EOP) received the message. Exchange Online server and re-routed for outbound delivery received the message. Office 365 to google.com delivered the message. Based on the analysis results, you can confirm that the message did pass through the Office 365 SMTP relay as ...
23.01.2017 · Since about a month we cannot relay email from our IIS SMTP Relay to Office 365. This has worked for a long time, therefore I do not get why it is not working anymore. The account used is still active and Iám able to sign-in with the account. I've even completely reinstalled and reconfigured the SMT...
22.07.2021 · We are moving our current SMTP relay for office 365 over to a Windows 2019 server. SMTP server has been installed. The virtual SMTP server has been configured exactly the same and the previous 2008R2 SMTP server, which still works. I can create an email text file to drop into the Pickup folder and it will send out so that works, which shows ...
17.11.2021 · Use an on-premises email server (Exchange Server or any other SMTP server) to relay mail if your device is unable to meet the previous requirements for connecting to Microsoft 365 or Office 365. In fact, you might find it easier to configure and manage an on-premises SMTP server to relay messages from your devices and applications, especially if you have many …
Set up Exchange Online as an SMTP Relay Using Windows Server 2012 · Install Internet Information Services (IIS) · In Server Manager, select Add Roles. · On the ...