On 9/12/10 11:13 AM Richard Gliebe wrote: > restarted sendmail and checked sendmail.cf > > Now, but I'm still missing the "250-AUTH". I think this will be my problem. oh my god, I get it running ;-) problem was a missing Useraccount on CentOS and my access file with: [...] Srv_Features: A [...] which meens: Don't offer SMTP AUTH on this mx server!!! thanks all and have a nice sunday ;-) cheers Richard