Hello
why mail not deliver
testmail my server to mailbox.org = not deliver
testmail zoho.com to mailbox.org = works

Hi. This is the qmail-send program at happy2.domain.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<benutzer@mailbox.org>:
User and password not set, continuing without authentication.
80.241.60.215 does not like recipient.
Remote host said: 550 5.7.1 <benutzer@mailbox.org>: Recipient address rejected: temporarily blocked because of previous errors - retrying too fast. penalty: 30 seconds x 0 retries.
Giving up on 80.241.60.215.
--- Below this line is a copy of the message.
sh /script/sysinfo
A. Kloxo-MR: 7.0.0.b-2014110202
B. OS: CentOS release 6.6 (Final) i686
C. Apps:
1. MySQL: mysql55-5.5.40-1.ius.el6.i686
2. PHP: php54-5.4.34-1.ius.el6.i686
3. Httpd: httpd-2.2.29-1.mr.el6.i386
4. Lighttpd: --uninstalled--
5. Hiawatha: hiawatha-9.8.0-f.2.mr.el6.i386
6. Nginx: --uninstalled--
7. Cache: --uninstalled--
8. Dns: bind-9.9.5-1.el6.i686
9. Qmail: qmail-toaster-1.03-1.3.38.mr.el6.i386
- with: courier-imap-toaster-4.1.2-1.3.16.mr.el6.i386
D. Php-type (for Httpd/proxy): php-fpm_event
E. Memory:
total used free shared buffers cached
Mem: 1893 1655 237 56 174 786
-/+ buffers/cache: 694 1198
Swap: 2047 0 2047