Hi, we have a Multi-Server-Setup with ISPConfig and we noticed that our servers don't send mail to our Main Mail server. The ISPConfig-Manual there is an example for the configuration of a Postfix Sattelite System where you put the FQDN of your Mailserver into the SmartRelayHost-Field. However the Mailserver does not accept mail from this sattelite system. Did I miss a step in the Mailserver-Setup? Thanks for your help.