Set up SPF for CR Servers hosting
Publish an SPF TXT record so receiving servers know which hosts may send mail for your domain.
SPF (Sender Policy Framework) is a DNS TXT record that lists servers allowed to send mail for your domain.
Typical SPF for mail on CR Servers hosting
Create a TXT record on the domain apex (@ / yourdomain.com):
v=spf1 a mx include:crservers.com ~all
Your welcome message or support may give a more specific include: value for your server. Prefer one SPF TXT record — do not publish multiple conflicting SPF strings.
After publishing
Wait for DNS TTL to expire, then validate with an SPF lookup tool. Pair SPF with DKIM and DMARC.