Issue annoying Mail from Plesk KAV

[onki]

Hi,

I have upgraded my server from Onyx to Obsidiuan two days ago.
Since then I do get mails from Plesk KAV several times a day.
When they come in I always get 4 mails at once with more or less the same content:

Dear User,

A message with the following attributes was not delivered because it is suspected to contain infected object


Sender = "ma mailaddress" (may be forged)

Recipients = "my mailaddress"

Subject = Dringende Informationen (versichertes Ereignis).

Message-ID = <[email protected]>

Antivirus filter report:

--- Antivirus report ---

The following malicious program is suspected:

HEUR:Hoax.Script.Scaremail.gen

--- Antivirus report ---

Any idea how do I get rid of this mails. Other mail users do get these mails as well.

Best regards
Onki