Issue:Spam e-mails are being sent from private domain via spoofing / forging.Resolution:Create SPF Record. (This example is for Domains hosted with Simply Mail Solutions)Method:Create new TXT record in DynDNS account:“v=spf1 ip4:88.151.128.0/21...
Important!
Make sure you backup your data and system before carrying out any steps noted here!
These steps have worked for me, but I cannot guarentee they will work for you!