Q: problem with antivirus in osx server 5.1 mail

Hi

i have  a problem with amavis antivirus in mail server of os x  server 5.1

The mail that arrived cannot be filtered with this error reported in log clamav

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Thu Mar 31 19:37:31 2016 -> /Library/Server/Mail/Data/scanner/amavis/tmp/amavis-20160331T183403-53476-BqKeu 707/parts/p003: Can't open file or directory ERROR

/Library/Server/Mail/Data/scanner/amavis/tmp/amavis-20160331T183403-53476-BqKeu7 07/parts/p003: Can't open file or directory ERROR

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can I solve this problem?

TIA

Giovanni