ROES Server Email with Office 365
Use Office 365 SMTP with TLS in ROES Server
Use this article to configure ROES Server to send email through Office 365 using authenticated SMTP and TLS.
Overview
ROES Server can use Office 365 and TLS to send email. Office 365 requires setup to allow applications or devices to send through it, so use the Microsoft reference link below before configuring ROES Server.
Important Office 365 Setup Note
Office 365 must be configured to allow authenticated SMTP submission for the mailbox being used. Review Microsoft’s authenticated SMTP submission instructions before testing ROES Server email.
Office 365 SMTP Settings
| Device or Application Setting | Value |
|---|---|
| Server / smart host | smtp.office365.com |
| Port | Port 587 recommended, or port 25 |
| TLS / StartTLS | Enabled |
| Username / email address and password | Enter the sign-in credentials of the hosted mailbox being used. |
ROES Server Configuration
Confirm the Office 365 mailbox can use SMTP submission
Use the Microsoft reference article to confirm the mailbox and tenant settings allow authenticated client SMTP submission.
Enter the ROES Server address value
The ROES Server address field should be:
Enter mailbox credentials and test
Enter the hosted mailbox username/email address and password, then test sending email from ROES Server.
Reference Link Preserved from Source HTML
Expected Result
After Office 365 allows authenticated SMTP submission and ROES Server is configured with the TLS SMTP address, ROES Server should be able to send outbound email through Office 365.
Escalation Notes
- Confirm the mailbox credentials are correct.
- Confirm authenticated SMTP submission is allowed for the hosted mailbox.
- Confirm the ROES Server address field uses smtp-tls://smtp.office365.com:587.
- Confirm TLS / StartTLS is enabled.
- If sending still fails, review the Microsoft SMTP submission requirements and any Office 365 tenant restrictions.