In this article, I’ll cover everything you need to know about your Office 365 SMTP settings.
But first, let me clear something up:
Since Office 365 is a suite of tools, you’ll use Microsoft Outlook — the email client in MS Office — to edit your account settings.
In addition to teaching you how to set up the SMTP server dominican republic phone number material on Outlook.com, I’ll also tell you how you can set up POP and IMAP too. If you aren’t familiar with these protocols, I’ll also give you a quick overview of SMTP, IMAP, and POP.
This Article Contains:
(Click on the links below to jump to a section of your choice.)
Office365 SMTP
Office 365 SMTP Settings
How To Set Up SMTP in Microsoft Outlook
How To Set Up POP and IMAP in Microsoft Outlook
SMTP, POP, and IMAP Basics
What is SMTP?
How Does SMTP Work?
What are POP and IMAP?
Just want the SMTP setting to configure email in Microsoft Office without any of the additional details?
Here they are:
Office 365 SMTP Settings
These are the settings for the SMTP AUTH client submission method.
SMTP server: smtp.office365.com
Port Number: 587
Encryption method: STARTTLS
Username: Your Office 365 email address
Password: Your Office 365 password
Once you set up these SMTP server settings, you’ll be good to go.
For the rest of us, let’s get started!
How To Set Up SMTP in Microsoft Outlook
Let’s now see how you can set up the SMTP setting for the Microsoft Office 365 mail server.
First, you’ll need an Office 365 or Exchange Online plan.
Once that’s covered, there are several ways to configure your account settings to ensure your mail flow through your personal Office 365 mailbox or even a shared mailbox.
You can:
Use direct send: This method involves setting your MX endpoint as the server. You’ll have to find your MX record from the Admin Center.
Use SMTP client submission, aka SMTP AUTH or SMTP authentication (that’s what we’ll be covering)
Use a dedicated relay (SMTP connector) that’s configured with your public IP address to send emails through the Office 365 SMTP relay.
Note: If you’re confused about what SMTP is, feel free to skip ahead to the section where I’ve explained it. After you’ve got that background, you can come back here to set things up in your Outlook application.
Why Use The SMTP Client Method?
The SMTP client submission (authentication) method is the best to use with the Microsoft Outlook application.
Here are the problems with the other two methods:
While the Direct Send method has higher sending limits, it only supports internal email communication — you can’t use it for contacts outside your organization.
If you use a line-of-business (LOB application), it must feature a static IP address to authenticate Office365 through the relay server method.
Here’s why the SMTP AUTH client submission method is better:
Unlike Direct Send, the SMTP AUTH mail configuration allows you to send mail to people inside and outside your organization.
Additionally, by using the SMTP authentication method, your IP address doesn’t need to be static like it would with the relay server method — giving you a lot more functionality!
If you’re handling an organization’s email, you can even change the SMTP AUTH settings for individual mailboxes from the Exchange Admin Center. You can access the Admin C
