I have 2 problems:
First one - I have installed ISPConfig and have e.g. www.domain.com site. When I go to User & Email -> New I have field Email Address firstname.lastname@example.org. BUT after I save this account the ISPConfig creates email address email@example.com (with www at the beginning) and of course rejects emails for firstname.lastname@example.org. Emails sent for email@example.com are delivered correctly.
Second one - I have instaled Uebimiau and I can't log on with the firstname.lastname@example.org.
What am I doing wrong? I need to have emails directly in domain.com.