Hi Guys

For the past two days I have been seeing the following error messages in the spam filter logs:

SFDB_WebErrors has reached its limit

09/04/14 08:02:53:531 -- (111477184) Checking SFDC

09/04/14 08:02:54:000 -- (111477184) Exception occurred during DoSFDCCheck: '''' is not a valid integer value

09/04/14 08:02:54:000 -- (111477184) Checking SFDE

09/04/14 08:02:54:937 -- (111477184) Exception occurred during DoSFDECheck: ''0Error=0'' is not a valid integer value

 The appears to be allowing a tremendous volume of spam through as neither SDFC or SDFB have captured any emails for the past 24 hours. I've tried:

 Restarting the spam filter service

Restarting the server

Reinstalling the software (current version)

Installing the previous version (4.5.1.98)

 All unsuccessful.

 I’ve checked the forum for similar errors.

Current email signatures in SDFC = 0

Current IPs listed in SDFB = 0 

 Can you please let me know if this is something to do with my installation or something at your end. If the latter, is there an ETA for a fix?

I've added keyword filters to stop the frequent spam offenders but my clients are freaking out.