Right! I did the setup and it works correctly!

Thanks to all

On 15/02/23 14:34, Daryl Richards wrote:

On 2023-02-15 6:41 a.m., Claudio Corvino wrote:

Ok thanks for your answer but I have another question: if I reject the e-mail instead of sending the non delivery notification, how can a "good" user be notified of the fact that his e-mail was not delivered?

Claudio

That should be the job of the sender's MTA, not you.