Dkim will help, however the CRUCIAL thing you MUST DO is the rDNS (Reverse DNS)
Ask your host how to do that as it is NOT DONE on sentora but with the host/isp
Code:
-1.274 RDNS_NONE Delivered to internal network by a host with no rDNS
Ask your host how to do that as it is NOT DONE on sentora but with the host/isp
My Sentora Resources
[Module] Mail Quota Count | Vagrant Box with Sentora
Graphic and Web Design. Development.
www.vanguardly.com
[Module] Mail Quota Count | Vagrant Box with Sentora
Graphic and Web Design. Development.
www.vanguardly.com