Diagnostic-Code: X-Postfix; mail for sd-xxxx.dedibox.fr loops back to myself

Diagnostic-Code: X-Postfix; mail for ... loops back to myself

Hi,
I have a server with dedibox.fr and have installed the ispconfig 2.2.3_sarge package.

I have set up a site: algarvegolfer.com

I have used the "Gestion intégrale DNS" DNS servers offered by Dedibox and entered;
A records
algarvegolfer.com. IN A 88.191.28.168
www.algarvegolfer.com. IN A 88.191.28.168
MX records
algarvegolfer.com. sd-XXXX.dedibox.fr. 10 (xxxx being the number of the dedibox)

which all get acceptance from www.dnsreport.com

I have changed the main.cf file from
myhostname = localhost.localdomain
to
myhostname = sd-xxxx.dedibox.fr (xxxx being the number of the dedibox)

I have tried ticking/un-ticking use maildir in ispconfig

...but can't send mails to the email address in use, they keep getting returned;
Diagnostic-Code: X-Postfix; mail for sd-xxxx.dedibox.fr loops back to myself (xxxx being the number of the dedibox)

I am slowly going nuts...

Please save my weekend?

 

My local-host-names Configuration File

SPConfig local-host-names Configuration File
# Version 1.0
#
###################################
localhost
dedibox.localdomain
localhost.dedibox.localdomain
localhost.localdomain
www.algarvegolfer.com
algarvegolfer.com
#### MAKE MANUAL ENTRIES BELOW THIS LINE! ####
local-host-names: unmodified, readonly: line 1
###################################

 

Thanks Till,
That worked and saved the weekend, I hope you'll enjoy yours as well!

 

mail for xxxx loops back to myself

Hi
I have same problem and spend 4 days to read all posts on the internet.
I try follow this forum but I can`t find local-host-names file /ect/postfix/ ?

 

mail for xxxx loops back to myself

I am very new to all of this
likely I set up one server on dynamic IP with only one domain and mails are working OK
now I try to set up second on static IP and using Virtualmin to add new virtual host and mails but no luck I try all I think.

 

If there's no /etc/postfix/local-host-names file, you can add the hostname to the mydestination line in /etc/postfix/main.cf.