MAVP-759 — ICAP server responded by unclear response
The ICAP server used as an antivirus engine should respond by by the X-Infection-Found header (or similar ones). If it does not to do it, the result should be estimated from the ICAP protocol status code:
200 OK (with included response body) is evaluated as positive answer
200 OK (without body) is evaluated according to the ICAP-PASS-200-WITH-PURE-BODY item setting
201 Created is evaluated as positive answer
204 Data OK is evaluated as negative answer.
This message reports the second case with negative answer setting.