Hi, Edited: Scenario: Domain DNS and Email on external Host, SPF and dkim Settings for my isp-config IP is published. Now i send auto generated emails via PHP as different Sender/reply-to DKIm signed, its correct. Problem: The Copies to the real Sender transported to the local Mailboxes(No Mailboxes configured), but when i deactivate Mail in Settings the Messages are not Dkim signed. any Help? P.S.: How i can change my Nickname?