Hallo, I have the following problem: I have more than one customer who has one domain. Some of them have their own subdomains. This works fine with ISPConfig3. But now I want to have Mailadresses - all with the same domain. For example: email@example.com and firstname.lastname@example.org. But I can't do that. I have to decide one of them to own the mail-domain domain.org. And so customer2 can't see his mail address and so he can't change the password for examle. So I want to make a maildomain customer2.domain.org for him and he get a mailbox email@example.com. And now I thought email alias is an option for making an other login-name and mail address for the same mail account. But I can't login with this alias name. And if an alias mail is not that, whats the difference to mailforeward?