avoid filtering excel files which used macro?

[marisu]

zimbra 509 , opensource , os: redhat as 5

1.I composed an excel file , in this file , I used marco .
2.I added this file as attachment to an email .
3.When I sent this email , it always been filtered .

And the system auto send a mail to admin and the sender , the info as follows :

A virus was found: XF.Sic.E

Scanner detecting a virus: ClamAV-clamd

Content type: Virus
Internal reference code for the message is 10881-01/rLDJRr6dxdR4

First upstream SMTP client IP address: [192.168.1.201] mail.domain
According to a 'Received:' trace, the message originated at: [192.168.1.201],
mail.china-mail.com mail.china-mail.com [192.168.1.201]

Return-Path: <admin@doman>

Now my question is : when i send a mail with an attachment of excel files,which used marco , how to avoid being filter by clamav?

[zibra]

I have the same problem about filtering Excel file!

Anyone who cares to the problem?

[Dirk]

If you are sure the message is erroneous then you could try putting the file inside a password protected zip file. The AV cannot scan encrypted files, which is normally a reason not to do this.

If may be worth sending a sample to ClamAV if it's a false positive though.

[zibra]

Thanks for your information!