[Mailman-Users] Mail Delivery

Mark Sapiro mark at msapiro.net
Tue Oct 17 21:23:53 EDT 2017

On 10/17/2017 05:32 PM, David Andrews wrote:
> At one time I set
> Reply-To: header munging
> under general settings to Yes. Some of my users used a screen reader
> that balked unless the header was munged, for some reason.  Well that
> software has gone away, and ISP's are much pickier these days, with MARC
> and dkim and SPF etc. Would this setting cause me delivery problems ??
> Should I go back and change it on older lists. I no longer set it to
> yes, leave it at no, its default.

By "set Reply-To: header munging under general settings to Yes" I assume
you mean reply_goes_to_list = This List, but I'm not sure what you're
asking. Reply-To: header munging is controversial and is a religious
war. Mailman developers think it shouldn't be done, but many think it
should be which is why the option exists.

I am not aware of message delivery issues one way or the other, but
there is an issue with Thunderbird and possibly other MUAs. Recent
T'bird has changed so that if you are looking at a list post with a
Reply-To: to the list and you do a simple reply or control-R, the reply
will be addressed to the From: and not the list. More recent T'bird has
a config editor option to restore the old behavior, but it's not the

See these threads for all the gory details:


Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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