Question Hostname

[Eppolit]

I've initially set up a hostname on my server like mydomain.com and not sub.mydomain.com. Is any conflict on the server good function because of this?

 

[WebHostingAce]

This explain the difference,

Difference between host name and domain name

I think its better to have a subdomain as host name when its comes to email rDNS.

 

[Bitpalast]

Is any conflict on the server good function because of this?

No conflict.