I think that would reject quite a bit of legitimate mail.  Any message that's 
being auto-forwarded from one address to another is likely to contain the 
"Delivered-To" header (though that header doesn't seem to be a defined 
standard, so it's up to each mail server to add it or ignore it).  What you 
really need is a way to filter messages based on the content of the 
"Delivered-To" header (i.e. if it matches the recipient address).  spamdyke is 
in a position to do this but doesn't currently have the capability.

-- Sam Clippinger




On Nov 1, 2012, at 12:04 PM, Eric Shubert wrote:

> I've recently begun seeing spam coming in (originating from Apple Mail 
> fwiw) that has a Delivered-To: header in it which matches the 
> destination address. Upon attempted delivery, qmail-send detects that 
> the mail is looping, generates a bounces, which then double-bounces back 
> to my server.
> 
> It appears to me that the problem ultimately is that the incoming 
> message already has a Delivered-To: header in it. I'm wondering if 
> setting up a header filter to reject any message with a Delivered-To: 
> header already in it would be effective, or would this perhaps also 
> reject some legitimate messages.
> 
> Any thoughts on this?
> 
> Thanks.
> 
> -- 
> -Eric 'shubes'
> 
> _______________________________________________
> spamdyke-users mailing list
> [email protected]
> http://www.spamdyke.org/mailman/listinfo/spamdyke-users

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