cPanel Email Forwarders and Hotmail / Outlook.com – Troubleshooting Guide

08 Jun, 2026 cPanel, Email, Microsoft

Emails forwarded from cPanel to Hotmail or Outlook.com addresses can arrive inconsistently or not at all — particularly automated emails like OTPs and access codes. This is a known issue with several possible causes.

Why Does This Happen?

SPF alignment breaks on forwarding — when your hosting server re-sends a forwarded email, it sends from its own IP rather than the original sender’s. Microsoft’s filters may block this as the IP doesn’t match the domain’s SPF record.

cPanel spam auto-delete — cPanel’s spam filter may silently delete messages before they reach the forwarder, so they never get forwarded at all.

Microsoft filters transactional emails — OTPs, password resets and automated notifications are aggressively filtered by Hotmail/Outlook.com as potential phishing, sometimes without any bounce or notification.

Troubleshooting Steps

1. Check your Junk folder — forwarded emails may be landing there rather than being fully blocked.

2. Check cPanel spam settings

Log in to cPanel → Email → Spam Filters
If Automatically Delete New Spam is enabled, disable it or lower the spam score threshold

3. Add senders to your Safe Senders list in Outlook.com

Find an email from the sender in your inbox or Junk folder
Right-click the email and select Block
From the dropdown select Never block sender
Click OK on the popup to add the address to your safe senders list

4. Still not receiving emails? — the hosting server IP may be on Microsoft’s blocklist. Contact support and we can check the IP reputation and submit a delisting request if needed.

A Note on Email Forwarding Limitations

Forwarding to external providers has inherent deliverability limitations due to SPF/DKIM alignment. For more reliable delivery consider:

Accessing your email directly via webmail or an email client
Configuring your Outlook.com mailbox to fetch mail from your cPanel account via POP3 instead

When to Contact Support

Steps above haven’t resolved the issue
You need mail logs checked to confirm delivery or rejection
You suspect the server IP is blocklisted by Microsoft