This issue can be resolved by creating an SPF (Sender Policy Framework) record to your Domain Name Server records. Having a SPF record set up can help prevent Altru's emails from being marked as spam. Configuring DNS records are not supported by Blackbaud, as different providers have unique means in updating DNS records. Please contact the appropriate software vendor or IT professional for assistance with this process or issue, which is beyond Blackbaud's scope of support

Follow this link for a list of Altru's IP addresses