Issue Creating a Send-only e-mail address leads to an error message: 'No such user ..'

[andreios]

Server operating system version

Ubuntu 24.04

Plesk version and microupdate number

18.0.64

I tried to create a send-only Email. But I got "No such user '[email protected]' in mail authorization database"

After activating inbox for this E-Mail account, it worked immanently.
I use postfix.

 

[Maarten]

This is normal behavior. You need a username and password to send an email; otherwise, anyone could send emails from your server without permission.

 

[andreios]

Sure, I have a username and Password set. I couldn't create the account without password. After activating inbox, it just worked with the given password.

 

[andreios]

When I search for send-only email with plesk this is the first result.

https://www.hostgator.com/help/article/how-to-create-a-send-only-address-in-plesk

"7 Keep the Mailbox checkbox unchecked."