Hi,

Thanks, seems like MX record just "mail" works (changing it didn't give error code). Contacting with DNS service provider wasn't succesful, they want sell theirs mail server:)

But something missing or is wrong in Xeams server configuration. Is it correct that servers hostname in user editor is my public IP without port number? In Qmail Agent are local nas IP addresses, but now show mail sending smtp error code 250

In youtube is special video about installing to Qnap Xeams mail server, but it wasn't help anymore... Any comments more, please.

Regards

Raul