Remote Server returned '554 5.4.0'

-- -- 932 Reputation points
2022-07-19T12:55:47.34+00:00

Hi

Exchange 2016 in Windows Server 2016 standard domain.

user1 has both 'Send As' and 'Full Access' permissions on user2 mailbox.

Add-MailboxPermission -Identity "user2" -User user1 -AccessRights FullAccess -InheritanceType all -automapping $false  
  
Add-AdPermission -Identity "user2" -User user1 -AccessRights ExtendedRight -ExtendedRights "Send As"  

In Outlook when user1 (logged in as user1) sends email from users2 mailbox the mail is always bounced with

Remote Server returned '554 5.4.0'  

What is the issue and how can I fix it?

Thanks

Regards

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Andy David - MVP 149.1K Reputation points MVP
    2022-07-19T14:33:02.893+00:00

    How long ago did you make this change?
    Does it work using Outlook Web App


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