Your customer noticed that all incoming messages containing MIME attachments that are either text or HTML are not being received. What is the problem?
A. An administrator needs to set the profile option SVC_EMAIL_PROCESS_UNKNOWN_CUST to Y and schedule the process.
B. The configured frequency to retrieve emails is too long.
C. Incoming messages have a custom filter.
D. Incorrect configuration of the inbound profile option: SVC_INBOUND_EMAIL_MAX_ATTACH_SIZE.