yep, im sure its all correctly installed! if not, sending over external email clients wouldnt work too.
but, i got errors now. duno why they didnt get logged in the past! i just deleted all the mail logs and restartet the syslog service, now some errors got logged!
Sep 19 19:33:06 postfix/smtp[15316]: warning: 8B72A1F029F: non-ESMTP response from mail.domain.tld[xx.xx.xx.xx]:25: Your Mail was rejected because it was recognized as spam!
Sep 19 19:33:06 postfix/smtp[15316]: warning: to prevent loss of mail, turn off command pipelining for xx.xx.xx.xx with the smtp_discard_ehlo_keyword_address_maps parameter
im like, wtf! whats the difference between sending over web and sending over external clients???