Hi I'm trying to set up mail plus server but I'm not very tech-savvy, I configured my A record using the tutorial from Synology but the MX record was vague, could someone help me by explaining what goes in the host and points to section in the dns settings , i though the host section would be the host name of my nas so it would be mail.mydomain.com or would it be the ddns same of my nas . for the points to section do i put my static IP?