helo, after hours of configuration (because i am new to postfix) now i have the following problem:
i can send mail to extern from my Outlook client.
i can not sent mail to my server, i get my mal back with error:
<email@example.com>: host myserver.de[188.8.131.52] said: 554
<firstname.lastname@example.org>: Relay access denied (in reply to RCPT TO
can you help me. i tested several solutions in the forum but nothing worked for me.