I tried adding a new domain but it fails; after some searching I find the KB article that applies to my situation
http://kb.odin.com/122512
The result is exactly the same as in this KB article
==> Checking for: mail_handlers_init... ok
==> Checking for: mailsrv_entities_dump... ok
==> Checking for: mail_admin_aliases... ok
==> Checking for: mail_auth_dump... ok
==> Checking for: mailman_lists_dump... ok
==> Checking for: mail_kav8_restore... ok
==> Checking for:...
Need Parallels Technical Support
http://kb.odin.com/122512
The result is exactly the same as in this KB article
==> Checking for: mail_handlers_init... ok
==> Checking for: mailsrv_entities_dump... ok
==> Checking for: mail_admin_aliases... ok
==> Checking for: mail_auth_dump... ok
==> Checking for: mailman_lists_dump... ok
==> Checking for: mail_kav8_restore... ok
==> Checking for:...
Need Parallels Technical Support