Hi I had to restart my server. ISPConfig started normal and postfix is runing. But I have the problem that my mailbox stays empty even though I should receive emails and I can't send emails because the connection to the SMTP server failed. Is there another service that has to be activated? Thanks in advence for your help!
I just checked the services under ISPConfig -> Management -> Status -> services. They are all online.
I have found the error. Same as here: http://www.howtoforge.com/forums/showthread.php?t=1524&highlight=command+startup Someone wrote http://domain.tld into the field Domain under Co-Domain.