[Mailman-Developers] before next release: disable backscatter in default installation

[Barry Warsaw]

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On Mar 25, 2008, at 5:33 AM, Julian Mehnle wrote:
> Jo Rhett wrote:
>> On Mar 24, 2008, at 6:45 PM, Mark Sapiro wrote:
>>> I still don't get what you mean by "properly deal with DSNs". Are  
>>> you
>>> saying that an MTA should never return a DSN? It should either  
>>> reject
>>> the mail during the incoming SMTP transaction or forever hold its
>>> piece?
>>
>> Yes.  And not just me, but a dozen different blacklists.  RTFM
>> "backscatter"
>
> You can however safely send a DSN if an SPF[1] check for the incoming
> message passes.
>
> 1. http://www.openspf.org

I've added this to http://wiki.list.org/display/DEV/Mailman+3.0

- -Barry

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