ERROR: CVD extraction failure

[Wilson Kwok]

Hi all,
   
  When the MailScanner every start to Virus and Content Scanning that must 
  ERROR: CVD extraction failure.
  How can I fix this problem ?

  Mail log:
  Sep  9 15:44:16 abc MailScanner[23616]: Virus and Content Scanning: Starting
Sep  9 15:44:17 abc MailScanner[23616]: ERROR: CVD extraction failure
Sep  9 15:44:17 abc MailScanner[23616]: Requeue: 61AFC7F3D.15CEE to 16D187EDF
Sep  9 15:44:17 abc MailScanner[23616]: Uninfected: Delivered 1 messages



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