Send & Receive Issues

How to Fix Outlook Cannot Receive Emails from Another Organization

Huda Qurayshi Oct 1, 2026 868 views

Question details

The user is unable to receive incoming email messages from an external organization in Outlook.

How to Fix Outlook Cannot Receive Emails from Another Organization

Product: Microsoft Outlook
Device & OS: not provided
Scenario: Receiving email communications from an external domain or organization.
Observed behavior: Outlook fails to receive messages from another organization for several days due to potential storage limits, domain configuration, or mail flow problems.

Before you start

Verify your internet connection and check your Junk Email folder to ensure the missing emails from the other organization were not incorrectly filtered as spam.

Solution 1Recommended

Check Your Mailbox Storage Limits

A full mailbox prevents new emails from being delivered. Checking your storage is the best first step in troubleshooting delivery issues.

Log into Outlook on the Web

Open your browser and sign in to your Outlook account via the web interface.

Access Outlook Settings

Click the gear icon in the upper right corner to open Settings, then select 'View all Outlook settings'.

Check Storage Capacity

Navigate to General > Storage. Review your storage usage meter and delete unnecessary emails, large attachments, or empty the Deleted Items folder if your mailbox is full.

Storage Sync Delay: After freeing up space, it may take a few hours for the mail server to sync and resume accepting incoming emails.

Solution 2

Verify Domain MX Records (For Admins)

If you are a Microsoft 365 administrator, incorrectly configured MX records can disrupt mail flow from external organizations to your domain.

Solution 3

Run the Support and Recovery Assistant

Use Microsoft's automated diagnostic tool to identify and resolve complex email delivery and configuration issues.

Free Microsoft Office alternative

Boost Your Daily Productivity with WPS Office

While resolving Outlook email delivery issues, you can enhance your document workflow with WPS Office. As a free and lightweight alternative to Microsoft Office, it offers excellent compatibility and all the tools you need to create, edit, and share documents effortlessly.

1. Download the Installer: Visit the official WPS Office website and download the free installation package for your operating system.
2. Install WPS Office: Run the installer and follow the simple on-screen instructions to set up the software.
3. Start Creating: Open WPS Office and instantly access Writer, Spreadsheet, and Presentation tools in a single unified workspace.

Seamlessly compatible with Microsoft Office formats (.docx, .xlsx, .pptx).Lightweight software that runs quickly and smoothly on Windows, Mac, and Linux.Familiar, intuitive tabbed interface for a zero-learning-curve migration.Built-in PDF editor to manage all your document tasks in one place.

microsoft office alternative - wps office

Frequently Asked Questions

Why am I only missing emails from one specific external organization?

This typically occurs if the external organization's domain or IP address has been flagged or blocklisted by your email server, or if their SPF/DKIM records are misconfigured. You should also check your Blocked Senders list in Outlook settings.

How do I check if an Inbox rule is redirecting my emails?

In the Outlook desktop app, go to File > Manage Rules & Alerts. On Outlook on the web, go to Settings > Mail > Rules. Review your active rules to see if any are set to move or delete messages from external senders.

Can reaching my storage limit completely stop incoming emails?

Yes. Once your mailbox reaches its maximum capacity (often 50GB for standard Microsoft 365 accounts), the server will reject new incoming emails. The senders will receive a bounce-back message indicating your mailbox is full.

Outlook & Email Problems