Undelivered Mail Returned to Sender auto email generated by postfix

I have mail delivery problem returned to sender address while email successfully reached to inbox.

"Undelivered Mail Returned to Sender"

This is the mail system at host mail.example.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

               The mail system

-o@example.com (expanded from <-o>): bad address syntax

<milter<em>macrodaemonname=ORIGINATING@example.com> (expanded from <milter< em="">macrodaemonname=ORIGINATING>): host
mail.example.com[private/dovecot-lmtp] said: 550 5.1.1
<milter<em>macro</milter<em></milter<>daemonname=ORIGINATING@example.com> User doesn't exist: milter_macro_daemon_name=ORIGINATING@example.com (in reply
to RCPT TO command)</milter<em>

<smtpd<em>client</smtpd<em>restrictions=permitsaslauthenticated@example.com>
(expanded from <smtpd<em>clientrestrictions=permitsaslauthenticated>): host
mail.example.com[private/dovecot-lmtp] said: 550 5.1.1
<smtpd<em>clientrestrictions=permitsaslauthenticated@example.com>
User doesn't exist:
smtpd_clientrestrictions=permitsasl_authenticated@example.com
(in reply to RCPT TO command)</smtpd<em></smtpd<em>

<smtpd<em>saslauthenable=yes@example.com> (expanded from <smtpd< em="">saslauthenable=yes>): host
mail.example.com[private/dovecot-lmtp] said: 550 5.1.1
<smtpd<em>sasl</smtpd<em></smtpd<>authenable=yes@example.com> User doesn't exist: smtpd_sasl_authenable=yes@example.com (in reply to RCPT TO
command)</smtpd<em>

<smtpd<em>tlssecuritylevel=encrypt@example.com> (expanded from <smtpd< em="">tlssecuritylevel=encrypt>): host
mail.example.com[private/dovecot-lmtp] said: 550 5.1.1
<smtpd<em>tls</smtpd<em></smtpd<>security_level=encrypt@example.com> User doesn't
exist: smtpd_tls_security_level=encrypt@example.com (in
reply to RCPT TO command)</smtpd<em>

<syslog<em>name=postfix/submission@example.com> (expanded from <syslog< em="">name=postfix/submission>): host
mail.example.com[private/dovecot-lmtp] said: 550 5.1.1
<syslog_name=postfix submission@example.com=""> User doesn't
exist: syslog_name=postfix/submission@example.com (in reply
to RCPT TO command)</syslog_name=postfix></syslog<></syslog<em>