- Plesk Onyx for Linux
A bounce email like the following is received on the sender mailbox:
CONFIG_TEXT: This is the mail system at host hostname.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
email@example.com: host example.com[203.0.113.2] said: 550 5.7.1
Command rejected (in reply to end of DATA command)
Forwarding is configured in webmail directly.
Records like the following can be found in
CONFIG_TEXT: postfix/smtp: BF5C06167C: firstname.lastname@example.org, relay=example.com[203.0.113.2]:25, delay=30, delays=0.01/0.02/30/0.2, dsn=5.7.1, status=bounced (host example.com[203.0.113.2] said: 550 5.7.1 Command rejected (in reply to end of DATA command))
SPF records are configured properly for the sender email.
The issue does not occur in sending from another mailbox on the same domain.
Incorrect forwarding configuration.
Configure forwarding via Plesk interface.