Hi, I set an External Mailserver for a domain (in the option tab). If I try to send a mail to this domain from another account that is on the ispconfig server I get an error: RCPT TO <[email protected]> fallito: <[email protected]>: Recipient address rejected: User unknown in local recipient table I think this is beacause the domain is added in local-host-names also if the mailserver is set to External Mailserver in the options tab.