Since I've installed vestcp I now can not send mail to the following

[protocore]

I did use cPanel had no problem with mail servers

I have a dedi with Hetznor They saying that it must be software But I love VestaCP so I doubt that is true

I have looked on blocklist mail IP but my IP is no problem so just really asking for answers from yourselfs

SpoilerShow

I have been help out alot by one of the main team leads

[AdamiPL]

what's the OS there?