Hi Mark,

Yes, the notification email for unsubscribe from the list from test1-bounces@doamin. Agree with you that it should come from LIST-owner address. Fo example test1-owner@domain.

Should I try to modify the code in file notifications.py in line 137.

Screenshot.

def send_goodbye_message(mlist, address, language): """Send a goodbye message to a subscriber.

Prepending to the standard goodbye message template is the mailing list's
goodbye message, if there is one.

:param mlist: the mailing list
:type mlist: IMailingList
:param address: The address to respond to
:type address: string
:param language: the language of the response
:type language: ILanguage
"""
goodbye_message = wrap(expand(getUtility(ITemplateLoader).get(
    'list:user:notice:goodbye', mlist, language=language.code),
    mlist, dict(
    user_email=address,
    # For backward compatibility.
    user_address=address,
    fqdn_listname=mlist.fqdn_listname,
    list_name=mlist.display_name,
    list_requests=mlist.request_address,
    )))
with _.using(language.code):
    msg = UserNotification(
        address, mlist.bounces_address,
        _('You have been unsubscribed from the ${mlist.display_name} '
          'mailing list'),
        goodbye_message, language)
msg.send(mlist, verp=as_boolean(config.mta.verp_personalized_deliveries))

Thanks, Marin

<http:\\probonoweek.lalawlibrary.org>

[http://www.lalawlibrary.org/sigimages/logo-sig.png]

Marin Sok IT Director P 213.785.2556 | F 213.680.1727 http://www.lalawlibrary.org/<http://www.lalawlibrary.org/> | MSok@lalawlibrary.org Access to Information = Access to Justice

<http://probonoweek.lalawlibrary.org/>

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From: Mark Sapiro <mark@msapiro.net> Sent: Monday, February 16, 2026 10:54 AM To: Stephen J. Turnbull <steve@turnbull.jp>; Marin Sok <MSok@lalawlibrary.org> Cc: mailman-users@mailman3.org <mailman-users@mailman3.org> Subject: Re: [MM3-users] Receiving Email from ListName-bounce@Domain for Unsubcribe

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On 2/16/26 10:09, Stephen J. Turnbull wrote:

Do you mean the notification email from the list is From test1-bounces@domain? Are you sure it is from "test1-bounces@domain"? It should be from "test1-owner@domain". Most notifications to users come from the "LIST-owner" address.

Actually, in this case it is From: the list bounces address. See <https://gitlab.com/mailman/mailman/-/blob/master/src/mailman/app/notifications.py?ref_type=heads#L137<https://gitlab.com/mailman/mailman/-/blob/master/src/mailman/app/notifications.py?ref_type=heads#L137>>.

There are other user notices From: the list bounces as well. See <https://gitlab.com/mailman/mailman/-/issues/1260<https://gitlab.com/mailman/mailman/-/issues/1260>>.

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

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Hi Mark,

I changed it and it works as expect now. Thanks a lot for your help guide me on this.

[cid:1c0306de-6190-48ad-a8f3-b67ffd1a48a3]

Thanks, Marin

<http:\\probonoweek.lalawlibrary.org>

[http://www.lalawlibrary.org/sigimages/logo-sig.png]

Marin Sok IT Director P 213.785.2556 | F 213.680.1727 http://www.lalawlibrary.org/<http://www.lalawlibrary.org/> | MSok@lalawlibrary.org Access to Information = Access to Justice

<http://probonoweek.lalawlibrary.org/>

Follow us: [http://www.lalawlibrary.org/sigimages/facebook.png] <http://facebook.com/LALAWLIBRARY> [http://www.lalawlibrary.org/sigimages/twitter.png] <http://twitter.com/LALAWLIBRARY> [cid:SocialLink_Instagram_32x32_dc37fa34-8ab4-41db-9940-9cb519436518.png] <https://www.instagram.com/lalawlibrary>

From: Mark Sapiro <mark@msapiro.net> Sent: Monday, February 16, 2026 2:44 PM To: Marin Sok <MSok@lalawlibrary.org>; Stephen J. Turnbull <steve@turnbull.jp> Cc: mailman-users@mailman3.org <mailman-users@mailman3.org> Subject: Re: [MM3-users] Re: Receiving Email from ListName-bounce@Domain for Unsubcribe

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On 2/16/26 13:55, Marin Sok via Mailman-users wrote:

Should I try to modify the code in file notifications.py in line 137.

You could change that line from

         address, mlist.bounces_address,

to

         address, mlist.owner_address,

if you feel it's important. I will probably do something about https://gitlab.com/mailman/mailman/-/issues/1260<https://gitlab.com/mailman/mailman/-/issues/1260> so it will be fixed for the next release.

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

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