Apr 11 00:50:27 unimatrix-01 postfix/smtpd[25212]: connect from localhost[127.0.0.1]
Apr 11 00:50:27 unimatrix-01 postfix/smtpd[25212]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 554 5.7.1 <example@gmail.com>: Relay access denied; from=<noreply@example.info> to=<user@gmail.com> proto=ESMTP helo=<unimatrix-01.example.com>
Apr 11 00:50:27 unimatrix-01 postfix/smtpd[25212]: lost connection after RSET from localhost[127.0.0.1]
Apr 11 00:50:27 unimatrix-01 postfix/smtpd[25212]: disconnect from localhost[127.0.0.1]

sudo postconf smtpd_recipient_restrictions

sudo postconf mynetworks