Many small businesses have applications, printers, phone systems, or other devices that send e-mail to the businesses users. These devices are typically setup to use SMTP e-mail protocols. Office 365 does support SMTP and the settings vary depending on the server you are on. Here is how you find out your Office 365 SMTP settings:
- Login into the Online Services Portal.
- Click on Outlook
- Click Options (upper right corner)->See All the Options
- Click on Settings for POP, IMAP, and SMTP access…
- There will be a section title SMTP setting, and should contain something like:
Server name: pod51010.outlook.com
Encryption method: TLS
These are the server name and port settings you should use to configure SMTP for Office 365. Notice Office 365 does require TLS encryption, so make sure to set that correctly within your device or software.
If your device doesn’t support an encrypted connection, then you’ll need to install an SMTP Relay within your business. This will supply an encrypted connection between the on premises devices and Office 365. This is relatively straight-forward to do with Windows Server which many small business already own.