Configure smtp relay office 365

1. Does Office 365 allow SMTP relay?
2. How to configure IIS for relay with Office 365?
3. How do I enable TLS 1.2 SMTP relay?
4. How to use port 587 for SMTP?
5. What is the difference between SMTP and SMTP relay?
6. How to configure SMTP relay in IIS?
7. Does Office 365 SMTP require TLS?
8. What is the default TLS for Office 365?
9. Can Office 365 Shared Mailbox use SMTP?

Does Office 365 allow SMTP relay?

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.

How to configure 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.

How to use port 587 for SMTP?

Port 587: The standard secure SMTP port

Modern email servers use port 587 for the secure submission of email for delivery. For example, if you use an email client software like Outlook or Apple Mail, it most likely is configured to use this port to send your messages.

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.

How to configure SMTP relay in 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.

Does Office 365 SMTP require TLS?

To provide the best-in-class encryption to our customers, Microsoft has deprecated Transport Layer Security (TLS) versions 1.0 and 1.1 in Office 365 and Office 365 GCC. However, you can continue to use an unencrypted SMTP connection without any TLS. We don't recommend email transmission without any encryption.

What is the default TLS for Office 365?

For Windows 7 clients that connect to Office 365, make sure that TLS 1.2 is the default secure protocol in WinHTTP in Windows. For more information, see KB 3140245 - Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows.

Can Office 365 Shared Mailbox use SMTP?

Now in order for it to receive and send e-mails (through SMTP and IMAP), we created a shared mailbox in Office 365's Exchange Online, took its credentials (username and password) and used it with the application, which works perfectly with this account.