How can I make my email server accept emails sent from a FotoWare SaaS tenant?
FotoWare uses SendGrid to send emails from FotoWare SaaS tenants. Such emails are used for invitations, password reset links, album sharing and more.
If your email server refuses to accept emails from FotoWare SaaS or sorts them as spam, you will have to add an SPF record for the SendGrid mail servers to "whitelist" emails sent by FotoWare via the sendgrid.net domain.
SendGrid's documentation has two articles that explain both the concept of SPF records and how to add an SPF record for SendGrid to your DNS.