Mailscanner warnings

[AlxFrag]

Hi,

i'm using mailscanner v. 4.66.5-3. My logs file is full of warnings like 
shown below:

Feb 14 10:36:45 posidon MailScanner[27874]: Virus and Content Scanning: 
Starting
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option --unzip
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option --jar
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option --tar
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option --tgz
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option --deb
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option 
--max-ratio
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option 
--tempdir
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option 
--recursive (-r)
Feb 14 10:36:45 posidon MailScanner[27874]: WARNING: Ignoring option --unrar


Is there any way i can stop that?

Thanks,

Alex