On Feb 5, 2008, at 6:21 PM, Doty, Timothy T. wrote:

> We are getting complaints about "mailbombing" of our postmaster  
> address with
> what appears to be email caused by a nasl.

How many messages are you / they talking about?

>      [EMAIL PROTECTED] on  
> 2/5/2008
> 2:52 PM
>            The message cannot be delivered due to a configuration  
> error on
> the server. Please contact your Administrator.
>            < system.being.scanned #5.3.0 SMTP; 553 5.3.0
> <[EMAIL PROTECTED]>...
> some.nessus.server is not a valid delivery host>

This is from a recent plugin, clamav_milter_blackhole_cmd_exec.nasl,  
which tries to send a message that will exploit a code execution flaw  
in clamav-milter. Apparently, the target mail system doesn't accept  
mail from some.nessus.server and is generating a bounce. Still, that  
should be just one message per scan.  Isn't it?

I did just commit a change to use any empty from address. MTAs should  
accept that as it's used for bounces. Look for revision 1.5 to become  
available in a couple of hours and let me know if that fixes the  
problem please.

George
-- 
[EMAIL PROTECTED]



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