This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 59%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMP%3C/text%3E%3C/svg%3E)
As subject, can we grant the Send As Permission for Plus Addresses in outlook?
The scenario: -
We have grand the Send As Permission to ******@testmail.com under inbox ******@testmail.com
It is able to send the email with From:******@testmail.com by ******@testmail.com
However, it gets failure if we try to send the email with From:******@testmail.com.
Could you please advise how to make it works? Much thanks.
The error:
|Unfortunately,the email with subject "Test" wasn't delivered.Trace: Failed messages:com.sun.mail.smtp.SMTPSendFailedException: 554 5.2.252 SendAsDenied; ******@testmail.com not allowed to send as ******@testmail.com;STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied;Failed to process message due to a permanent exception with message[BeginDiagnosticData]Cannot submit message. 0...
Please contact your system admin.
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Using classic Outlook for Windows in business environments
Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Answer accepted by question author
Afaik plus addresses are only supported for receiving messages, you cannot use them to send messages. This is mentioned in the official documentation: https://learn.microsoft.com/en-us/exchange/recipients-in-exchange-online/plus-addressing-in-exchange-online#using-plus-addresses