How to Office 365 smtp relay server

Explore how office 365 smtp relay server can improve your email deliverability and marketing efficiency.

Setting up an Office 365 SMTP relay server can prove quite an efficient method of sending email securely from your applications or devices, whether from printers and scanners to third-party software. Office 365 offers robust email services; if you know the right steps in setting it up as an SMTP relay, it may not prove so tricky after all.

With an Office 365 SMTP relay , your device or application will be able to send mail through the Office 365 server. Among the advantages that you’ll get by using Office 365 for your SMTP relay are improved deliverability, enhanced security, and also centralized management of emails.

There are mainly three ways by which you can establish an SMTP relay with Office 365:

SMTP Client Submission (Authenticated SMTP)

Let us focus on one of the most common method being the SMTP Relay through a Connector as it is the most secure method to use and suitable to most businesses.

Prerequisites for Office 365 SMTP Relay Setup

Microsoft 365 account with admin privileges

Static IP address for the device or server that will send out emails (optional but highly recommended for greater security)

To create a connector to enable your email server to communicate with Office 365, follow these steps:

Admin Centers: Open Exchange to open the EAC.

Mail Flow: Click on Mail Flow in the left sidebar of the EAC.

New Connector: Create a New Connector by clicking the + sign.

Set the From field to Your organization’s email server and the To field to Office 365.