The Anti-Spam Setting excludes records that have been contacted within the specified number of days.
Set 0 in anti-spam setting (Form Campaign Activity).
Connected to your database and check if it is in emergency mode, else run this comand:
ALTER DATABASE DB_NAME SET EMERGENCY
set single user in the database property and run this command:
DBCC CHECKDB ('DB_NAME',REPAIR_ALLOW_DATA_LOSS)