I duplicated the ispconfig installation on the new server using the same perfect server guide. The new server is using the same hostname as the old. I have not changed the DNS PTR record to point to the new server yet. I then ran this script: https://gist.github.com/yorch/9410737#file-ispconfig-migration-sh After the script was done I ran an ISPCONFIG update and redid the permissions, services, and crons. Ran the DKIM patch on the new server. Rebooted the server and I cannot login to mail. Everything else seems to work. I get invalid password or user name.