======== Required information ====
- iRedMail version: latest
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Linux/BSD distribution name and version: Ubuntu
- Related log if you're reporting an issue:
====
Users are reporting the following problem:
aaa@ourdomain.com emails to someone@otherdomain.com which auto forwards to bbb@ourdomain.com.
aaa@ourdomain.com gets Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
bbb@ourdomain.com
(ultimately generated from someone@otherdomain.com)
SMTP error from remote mail server after RCPT TO:<bbb@ourdomain.com>:
host mail.ourdomain.com [111.111.111.111]: 553 5.7.1 <aaa@webshield.net.au>:
Sender address rejected: not logged in
Any ideas why and how to fix?