Setup windows server 2012 r2 smtp relay for office 365

1. How to configure Internet Information server IIS for Relay with Office 365?
2. How do I enable TLS 1.2 SMTP relay?
3. Can Office 365 SMTP relay work with external address?
4. How to setup SMTP relay IIS?
5. How do I add an IP Address to my SMTP relay Office 365?
6. What is the difference between Office 365 direct send and SMTP relay?
7. What is the difference between SMTP and SMTP relay?

How to configure Internet Information server IIS for Relay with Office 365?

Select Start > Administrative Tools > Internet Information Services (IIS) 6.0. Expand the current server, right-click the SMTP Virtual Server, and then select Properties. On the General tab, select Advanced > Add. In the IP Address box, specify the address of the server that's hosting the SMTP server.

How do I enable TLS 1.2 SMTP relay?

Type "Internet Options" and select Internet Options from the list. Click on the Advanced tab and from there scroll down to the very bottom. Confirm that TLS 1.2 is checked. If it is not, please check the box adjacent to Use TLS 1.2 and then Apply.

Can Office 365 SMTP relay work with external address?

Microsoft 365 or Office 365 SMTP relay uses a connector to authenticate the mail sent from your device or application. This allows Microsoft 365 or Office 365 to relay those messages to your own mailboxes and external recipients.

How to setup SMTP relay IIS?

Click the Relay button on the Access tab, and set up the relay options for the server. Ensure that localhost and the IP address 127.0. 0.1 are granted permission to relay mail. Click OK to accept the options, and then click Apply and OK to return to the main page of the IIS Manager.

How do I add an IP Address to my SMTP relay Office 365?

Edit SMTP Relay Connection

To add an IP Address to an existing connection, we can simply open an existing one: Click on the connection. Click on Edit send email identity. Add or remove IP Addresses from the connection.

What is the difference between Office 365 direct send and SMTP relay?

Microsoft 365 or Office 365 SMTP relay is similar to direct send except that it can send mail to external recipients. Due to the added complexity of configuring a connector, direct send is recommended over Microsoft 365 or Office 365 SMTP relay, unless you must send email to external recipients.

What is the difference between SMTP and SMTP relay?

Simple Mail Transfer Protocol (SMTP) is a straightforward process that allows users to send, relay, and monitor outgoing emails. An SMTP relay service—also commonly known as an SMTP gateway service—takes this a step further by allowing you to send more transaction and marketing-related emails.