On 05/02/2017 04:07 PM, Christopher Faylor wrote:
> On Mon, May 01, 2017 at 12:18:51PM +0200, Florian Weimer wrote:
>> On 04/30/2017 07:34 AM, Christopher Faylor wrote:
>>> On Sat, Apr 29, 2017 at 10:32:42PM -0400, Christopher Faylor wrote:
>>>> On Fri, Apr 28, 2017 at 06:29:38PM +0200, Florian Weimer wrote:
>>>>> Hi,
>>>>>
>>>>> we have received a report that at least one of the glibc mailing lists
>>>>> lacks anti-DMARC header rewriting:
>>>>>
>>>>>     https://sourceware.org/ml/libc-help/2017-04/msg00034.html
>>>>>
>>>>> I have seen the usual “via” From rewriting on other sourceware.org
>>>>> lists.  I don't think we have much choice but to enable that for all the
>>>>> glibc lists, too.
>>>>
>>>> ?  We don't arbitrarily turn on/off features like that for different
>>>> mailing lists.  This feature is on for every mailing list.
>>>
>>> I found what should have been a minor misconfiguration in libc-help
>>> mailing list configuration.  I don't know if it will help or not.
>>>
>>> I'll monitor the mailing list to see if this fixes it.
>>
>> Thanks for investigating this.
> 
> Could you ask them to send another message to the list to see if the
>  From is properly mangled?

The most recent message didn't have rewriting applied.  I assume that 
gmail.com has strict DMARC policies and would ordinarily trigger 
rewriting.  However, I don't see this happening on other sourceware.org 
lists, either.  Maybe we'd need a test posting from google.com.

Thanks,
Florian