First off, postfix works fine if I use an adress that exists. But if I send a email to a user/adress that does not exist I would want them to get a reply with that. This is my mail.log Code: Mar 27 14:56:40 control postfix/smtpd[3419]: connect from mail-qe0-f49.google.com[209.85.128.49] Mar 27 14:56:40 control postfix/smtpd[3419]: Anonymous TLS connection established from mail-qe0-f49.google.com[209.85.128.49]: TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits) Mar 27 14:56:40 control postfix/smtpd[3419]: NOQUEUE: reject: RCPT from mail-qe0-f49.google.com[209.85.128.49]: 450 4.1.1 <[email protected]>: Recipient address rejected: User unknown in virtual mailbox table; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<mail-qe0-f49.google.com> Mar 27 14:56:40 control postfix/smtpd[3419]: disconnect from mail-qe0-f49.google.com[209.85.128.49] What I want is to get something like this to the sender: Mail Delivery Subsystem <[email protected]> Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain doman.tld by smtp.domain.tld. [1.2.3.4]. The error that the other server returned was: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown ----- Original message ----- Any help is appreciated.
You don't need do nothing. That message should be sent from mail-qe0-f49.google.com[209.85.128.49] to the sender.
I just noticed that it does, but after around 24-28 hours. Is there any configuration issue here? I would want the sender to get notified instantly! Here is what I got in return.