SSRS Subscriptions have been working without a problem for the past year. They stopped running the past 2 days. Receive the error:
"Failure sending mail: At least one of the From or Sender fields is required, and neither was found. Mail will not be resent."
The "To" fields have a complete email address, email@example.com. Reporting Services Configuration Manager states the Sender Address as firstname.lastname@example.org which is a valid email address.
Is there a service I should check?