WARNING: Ignoring deprecated option --unzip

[Simon Jones]

Evening chaps,  gateway still running like a dog!  I've noticed in
/var/log/maillog the following;

Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --unzip
Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --jar
Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --tar
Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --tgz
Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --deb
Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --max-ratio
Jan 24 19:27:29 mailgate1 MailScanner[6685]: WARNING: Ignoring
deprecated option --unrar

I'm assuming it won't hurt performance and I'm sure someone's come
across this before so if you could point me in the direction to the
fix it'd be great,

thanks

Simon