email problem, latest ISPC3 on debian squeeze

[manarak]

I followed the perfect server tutorial for installing ISPC3 on debian squeeze.

I've got a rather strange problem.

I can receive email from outside
I can send to other email accounts on the server

BUT:
I can't send mail to outside of the server.
Nor by sendmail nor by SMTP (Outlook).

There is nothing in the mail errors log, the following is in the mail info log:
Jun 7 18:15:04 hostname postfix/smtp[13530]: 706A210421D8: to=<webmaster@***.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=0.84, delays=0.47/0.01/0/0.36, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=23081-18, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 2866F10421D9)
Jun 7 18:15:04 hostname postfix/qmgr[31595]: 706A210421D8: removed
Jun 7 18:15:04 hostname postfix/pipe[13556]: 2866F10421D9: to=<webmaster@***.com>, relay=maildrop, delay=0.05, delays=0.01/0.01/0/0.03, dsn=2.0.0, status=sent (delivered via maildrop service)
Jun 7 18:15:04 hostname postfix/qmgr[31595]: 2866F10421D9: removed
so... the server thinks the message has been sent.

[till]

Did you send the email to webmaster@***.com or to another address?
Is ***.com the external domain?

[manarak]

yes, this is an example of a mail sent to an external domain

[till]

Ok, your server handles this as local email address. This can have several reasons:

a) The hostname of the server is ***.com
b) You use ***.com somewhere in postfix main.cf, e.g. as mydomain or myhostname value
c) ***.com is in /etc/mailname
d) A Email domain ***.com has been created in ISPConfig
e) ***.com is used in /etc/hosts, e.g. for the IP of the server.

[manarak]

Till, danke, you are very good!

In fact I had forgotten that I created the site/domain/email address of the other site on the server inpreparation of moving it there!

Thank you very much !