Article ID: 1375, created on Oct 6, 2008, last review on May 10, 2014

  • Applies to:
  • Plesk 8.x for Linux/Unix


The bounce message example:

Hi. This is the qmail-send program at domain.tld
I'm afraid I wasn't able to deliver your message to the following
This is a permanent error; I've given up. Sorry it didn't work out.

<mailname@domain.tld>: failed after I sent the message.
Remote host said: 550 5.7.1 This system has been configured to reject
our mail. An IP address ( found in the message's'
Received:' headers is listed by the lookup site

This error means that the server a message was sent from is listed in some RBL database. There are two reasons why the server can be added to RBL:
- mail relaying is opened on the server.
- much SPAM amount was sent from the server, 766.

You can read more about RBL SPAM protection at

b8ef5052d936e902043e41759118114e a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 56797cefb1efc9130f7c48a7d1db0f0c

Email subscription for changes to this article
Save as PDF