An SPF record is a tool used by most email providers (Gmail, Yahoo, Hotmail, Outlook365, etc) to confirm that the sender of an email is legitimate.
When you send an email through RAMCO the "From" is typically your association's generic email address, but the mail is sent through servers at NAR's office. A recipient's email server will see your email domain, but will also see that the mail is coming from a *different* domain, and that is a trick that spammers use called "spoofing" to try and fool someone into opening the email. Spoofing makes an email less trustworthy, so you need to use an SPF record to tell the recipient's email server that it's OK for RAMCO to send out email pretending to be you.
Setting up an SPF record involves editing your DNS records. If you don't know what DNS is, or how to edit your DNS records, you should forward this information to your IT staff or the support staff for your domain registrar (GoDaddy, Network Solutions, etc).
The entry to add to your DNS as an SPF record is:
v=spf1 include:Chlramcosmtp01.realtors.org ~all
If you don't already have an SPF record you can add that as a new TXT type of DNS record. If you do already have an SPF record for your domain you will want to simply add: include:Chlramcosmtp01.realtors.org
Since these changes must be done in your DNS records we cannot make this change for you, but we can be a reference if your IT contact has questions.