How to fix my hotmail incoming emails from bouncing

To troubleshoot the issue of incoming emails bouncing back on your iPhone using Outlook, consider the following steps:

1. Check Email Settings: Ensure that your email settings are correctly configured on your iPhone. This includes verifying the incoming mail server settings and ensuring that your account is properly authenticated.
2. Review Bounce Messages: If possible, check the bounce-back messages for any specific error codes or messages that might indicate why the emails are bouncing. Common reasons include full mailboxes, incorrect email addresses, or server issues.
3. Clear Offline Items: If you are using Cached Exchange Mode, sometimes emails may not appear correctly. You can try clearing offline items in your Inbox and resynchronizing:
   • Right-click the Inbox folder and select Properties.
   • In the Inbox Properties dialog box, select the General tab and click Clear Offline Items.
   • Press Shift+F9 to force the resynchronization of your Inbox folder.
4. Check Active Directory Attributes: If you are receiving emails that weren't intended for you, it might be due to special characters in your Active Directory attributes. Ensure there are no incorrect characters in your email settings that could cause misrouting.
5. Contact Support: If the issue persists, consider reaching out to Microsoft support for further assistance, as they can provide more specific guidance based on your account settings and any potential server-side issues.

By following these steps, you should be able to identify and resolve the issue with bouncing emails on your iPhone.

References:

• Help Identify My Issue with Sending/Receiving Email on a Mobile Device (Automatic Checks)
• Sometimes emails do not appear in Cached mode Inbox even if they were synchronized down from mailbox

Hi David,

Thanks for reaching out. I know it’s frustrating when some emails bounce while others come through, especially if you depend on your iPhone for important messages. Let’s walk through a few steps that can usually fix this.

First, check your Outlook.com account settings on the web. Sometimes inbox rules, forwarding settings, or filters can block or redirect messages unintentionally. Removing any unnecessary rules and adding trusted senders to your Safe Senders list can help prevent bounce issues.

Second, verify your mailbox isn’t full and that aliases or forwarding addresses are correctly configured. A full mailbox or misconfigured alias can cause incoming emails to fail.

Third, refresh the connection on your iPhone. Remove and re-add your Outlook account in the Mail app or reinstall the Outlook app. This clears cached data and forces a clean sync, which often fixes delivery inconsistencies.

Last, if bounce messages mention codes like “550 5.7.1” or blocked IPs, the issue may be on the sender’s side or related to Microsoft’s spam filters. In that case, advise the sender to check their domain authentication (SPF/DKIM/DMARC) or request IP delisting through Microsoft’s Sender Support.

I hope you find this information helpful. Please let me know if you have any further questions If the answer is helpful, please click "Accept Answer".

Regards,

Carlo