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I've been trying to figure this one out all day long, so every comment would be highly appreciated!

I have a Plesk webserver and installed Dr. Web (with a proper licence). Everything seems to be working fine, only some (meaning not all but still hundrets a day) emails get rejected becuase Dr. Web causes an error.

The email I get looks something like this:

Dear Postmaster,

the message with following attributes has not been delivered, because contains an object which cannot be checked by antivirus.

Sender = a@bc.de

Recipients = b@bc.de

Subject = The Subject

Message-ID = CBEPIDEIGGBBNIJCDKKLEEJPCJAA.xxx@xxx.de

--- Dr.Web report ---

Dr.Web detailed report: The filter fails to pass object to the DrWEB daemon

--- Dr.Web report ---

Can anybody make sense of this error?

The filter fails to pass object to the DrWEB daemon

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closed as off-topic by Sven Sep 29 '15 at 20:35

This question appears to be off-topic. The users who voted to close gave this specific reason:

If this question can be reworded to fit the rules in the help center, please edit the question.

Check for any filtering is applied in Dr Web which is rejecting the mail.

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I'm not sure what you mean, can you clarify? – Timo Nov 23 '10 at 19:02
    
I believe the problem is not the filtering, it's that the filter can't event be applied because of an error... – Timo Nov 23 '10 at 19:03

Chage the configuration file like below.
/etc/drweb/drweb_qmail.conf

ScanningErrors = pass
ProcessingErrors = pass 
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