Problem:
Users are experiencing issues with email delivery in Microsoft 365, including messages not reaching recipients or getting stuck in the outbox.
Possible Causes:
1. Network Connectivity:
- Poor internet connection affecting the sending of emails.
2. Incorrect Recipient Address:
- You might be entering incorrect email addresses.
3. Outlook Configuration Issues:
- Problems with the Outlook configuration preventing successful email delivery.
4. Mailbox Full:
- The recipient's mailbox may be full, preventing the delivery of new emails.
Troubleshooting Steps:
Step 1: Check Internet Connection:
- Ensure that users have a stable internet connection to send emails successfully.
Step 2: Verify Recipient Email Address:
- Confirm that the recipient's email address is correct. Check for typos or outdated information.
Step 3: Resend the Email:
- Try resending the email that got stuck in the outbox.
Step 4: Check Outlook Settings:
- Verify the Outlook settings and configuration to ensure they are correctly set up.
Step 5: Clear Outbox:
- Clear the outbox to release any stuck emails.
Step 6: Check Recipient's Mailbox:
- Confirm if the recipient's mailbox is full. Suggest contacting the recipient through an alternative method.
Step 7: Review Message Size:
- If emails include large attachments, consider reducing the file size or using file-sharing services.
Step 8: Email Forwarding Rules:
- Check if any forwarding rules are diverting emails to unintended folders.
Step 9: Check MX Records:
You can check the MX (Mail Exchange) records to ensure they are configured correctly for email delivery.
Step 10: Check SPF and DKIM Records:
Verify SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) records for enhanced email authentication and delivery.
Step 11: Temporary Workaround:
- You can try sending the email from a different email client or using the web version of Microsoft 365.
Step 12: Contact Support:
- If the problem persists, please contact the support team.
