Authenticate your domain with SpinOffice CRM by modifying your domain's SFP records. These changes allow your outgoing emails to appear to come from your domain, instead of from our servers. Your domain provider knows exactly how and where to adjust it.
SPF: Create a TXT record for your domain with:
v=spf1 a mx include:mailrouter1.spinware.nl include:spf.spinoffice-crm.com ~all
After you've made the required SPF changes, please wait 24-48 hours for the changes to propagate.