My emails are not working. I am self hosting using Ubuntu 14.04. My server has a FQDN. I have multiple virtual servers. My FQDN was the same as one of my virtual servers, but I got a new one and still my emails are not working. Mail for domain is enabled. My second question concerns Post-Installation Wizard. what am I supposed to put in the Primary nameserver box? Do I put mt FQDN? What about in the secondary box? I am also using freedns.afraid.org and my domains are all pointing in the right direction.