Hotmail - Sending email is undeliverable

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HarvMan

Senior Member
OS Version(s)
  1. Windows
  2. iOS
  3. Android
Outlook version
Outlook 365 32 bit
Email Account
POP3
Hi,

I have used my Hotmail account for years. My Outlook 365 (2016) is all of a sudden unable to deliver messages.
The undeliverable message is sent back showing:
This message could not be sent. You do not have the permission to send the message on behalf of the specified user.
Error is [0x80070005-0x000004dc-0x00000524].
The so-called sent message shows me as the sender, but has appended "on behalf of <my name>".
I believe the "on behalf" is causing this problem.
I have recreated the Outlook profile and have been online with Microsoft Support but no luck.

Can anyone please guide me on how to resolve. Thanks!
 

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If bounced emails are in the “Undeliverable” category, that means that the receiving email server is temporarily unavailable, was overloaded, or couldn't be found.

--
Lewis
 
The so-called sent message shows me as the sender, but has appended "on behalf of <my name>".
This error means you don't have permission to send as that address - this is not uncommon on an Exchange server but should not come up with Outlook.com accounts.

What is the address for the sender and the on behalf of? (alias@ and me@ are fine for the first part. use the domain name if its a free service or isp - use domain.com if its a private domain.)
 
This error means you don't have permission to send as that address - this is not uncommon on an Exchange server but should not come up with Outlook.com accounts.

What is the address for the sender and the on behalf of? (alias@ and me@ are fine for the first part. use the domain name if its a free service or isp - use domain.com if its a private domain.)

Thanks Diane,

The address of sender (and on behalf of) is my Hotmail account: myname@hotmail.com
 
You don't have an alias on the account - like me@gmail? That will send as 'on behalf of'.

What is your outlook version/ build?

Try removing the account from outlook and adding it back.
 
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