Cannot Create or Delete Domain

[qcomm]

I am getting this error while trying to create a new domain and a similar one while trying to delete a domain. Its an email erro. How do I get rid of it?


Failed domain creation: Unable to update domain data: Failed mail post-configuration: Can't create mail domain servie: mailManager->addDomain() failed: mailmng failed: MEAOPO.PostOffice.AddPostOffice failed for name DOMAIN.com [DOMAIN.com]
at (MailEnable::MailEnableDomain::MailEnableDomain line 22)
at execute console command --add-domain(vconsoleapp::start line 128)
at execute "D:\Program Files\SWsoft\Plesk\admin\bin\mailmng.exe" --add-domain "--domain-name=DOMAIN"(vconsoleapp::run line 138)
---------------------- Debug Info -------------------------------
0: D:\Program Files\SWsoft\Plesk\admin\htdocs\domains\create_domain.php:146