– Add SPF record for both SMTP servers that are authorized to send email for kimconnect.com domain.
– Set up A and PTR records for both SMTP server sending email for westernmutual.com.
– Verify that MX records for kimconnect.com only point to our external email provider. Inbound email should not be going straight to the onsite SMTP server.
– SMTP server must send out with reply to addresses that are valid so that replies are sent to legitimate recipients at our external email provider.