Successful delivery message

[JosePP]

Hello!

When rebuilding the mail server, I see that it now returns this message when sending mails, do you know how to stop it?

This is the mail system at host *****.

Your message was successfully delivered to the destination(s)
listed below. If the message was delivered to mailbox you will
receive no further notifications. Otherwise you may still receive
notifications of mail delivery errors from other systems.

[sandeep]

@josepp is this from CWP ?

[JosePP]

@sandeep Yes CWP

[sandeep]

i tested on our test server and didn't found this anywhere.

can you check if email sending and receiving are fine ?

/var/log/maillog

[JosePP]

@sandeep Yes, everything works normally, only that every time someone sends an email from the server to the outside, a confirmation notice arrives. It is strange.

[JosePP]

@sandeep https://vertutoriales.com/desactivar-successful-mail-delivery-report-envio-de-confirmacion-o-con-exito-desde-postfix/

I have done these steps, tomorrow I will let you know if it worked.

[sandeep]

probably auto responder ?

[JosePP]

@sandeep No, since it is passed from all emails on the server.

That is to say, if I write an email to you from the server, the server itself sends me back that message informing that it has been successfully delivered. It is something very strange

I'm waiting to see if anyone else on the server is having this happen or if the change worked, so I'll let you know later in the day.

[JosePP]

@sandeep Adding this to the end of the file seems to have worked, no more confirmation messages.

/etc/postfix/main.cf

smtpd_discard_ehlo_keywords = silent-discard, dsn