======== Required information ====
- iRedMail version: 0.9.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Linux/BSD distribution name and version: CentOS 7
- Related log if you're reporting an issue:
====
When someone is asking "Return receipt" and in Roundcube try to send that receipt, then error is produced.
Also "Return receipt" is not displayed in Thunderbird, Outlook etc....
maillog has this
Feb 3 13:01:17 iredmail postfix/smtpd[13352]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 554 5.7.1 <kmihalj@xxx.hr>: Recipient address rejected: Access denied; from=<> to=<kmihalj@xxxx.hr> proto=ESMTP helo=<iredmail.xxxx.hr>
Feb 3 13:01:17 iredmail roundcube: SMTP Error: SMTP error: Failed to add recipient 'kmihalj@xxxx.hr' in /var/www/roundcubemail-1.0.4/program/lib/Roundcube/rcube.php on line 1505 (POST /mail/?_task=mail&_framed=1&_action=sendmdn?_task=&_action=)