issue with reply to mailing list

[Ken Brown]

On 5/18/2020 11:07 AM, Jon Turney wrote:
> On 16/05/2020 20:42, Marco Atzeri via Cygwin wrote:
>> On 16.05.2020 20:47, Andrey Repin wrote:
>>> Greetings, Marco Atzeri!
>>>
>>>> it is just me or the cygwin mailing lists post are not
>>>> reporting anymore the reply to the list tag ?
>>>
>>> You seems to have replied to an off-list mail.
>>>
>>> msgid:0d9b4a1b-05ba-8ab1-3783-c3d1f04f97b7@gmail.com is not found in my list
>>> archive.
>>
>> not that the issue.
>> That give me the idea that I am not the only one with the issue,
>> as I am changing manually the send to address and sometime
>> I forget or screw ups.
>>
>>>> I am using Thunderbird and the option reply to list is not
>>>> offered anymore for any of the cygwin mailing list.
>>>
>>> Ask Thunderbid, what it expects as an indication of a "list message" ?
>>> There's a bunch of "List-xxxx" headers.
>>
>> looking in chronological order, I see the problem on the cygwin-apps
>> and developer mailing lists from the date of server change.
>>
>> The cygwin main list seems to not have the same issue.
>> But it can be an issue with Thunderbird as I have impression
>> to had the same issue also with it.
> 
> Comparing the configuration of the lists, the only significant difference I 
> noticed is that cygwin-apps is not configured to add a 'List-Post' header.
> 
> Searching there does seem to be suggestions that the presence of this header 
> causes Thunderbird to display a 'Reply to List' button.
> 
> I changed the cygwin-apps list configuration to add that.  Let me know if that 
> makes things better (or worse!).

I was seeing the same issue as Marco, and it appears to be fixed now.  (The 
latest message from Brian to cygwin-apps shows the Reply List button.)  I'm also 
seeing the issue on cygwin-patches and cygwin-developers.  Can you fix those too?

Thanks.

Ken