The reverse DNS seems to be set up now:
nslookup 91.230.121.155
Non-authoritative answer:
155.121.230.91.in-addr.arpa name = elysium-project.org.
Authoritative answers can be found from:
121.230.91.in-addr.arpa nameserver = pns11.cloudns.net.
121.230.91.in-addr.arpa nameserver = pns13.cloudns.net.
121.230.91.in-addr.arpa nameserver = pns12.cloudns.net.
But the A record has changed:
nslookup elysium-project.org
Non-authoritative answer:
Name: elysium-project.org
Address: 104.27.137.205
Name: elysium-project.org
Address: 104.27.136.205
Activation mail still not working for me....
You should probably setup a subdomain like mail.elysium-project.org as MX for elysium-project.org for this, so it does not have to change when you switch your webservers,