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  • From: Stephen Jarjoura <address@concealed>
  • To: "address@concealed" <address@concealed>
  • Subject: Re: [en@sympa] How to prevent "which" email command for showing subscription to a specific list?
  • Date: Mon, 1 May 2023 16:03:00 -0400

Hello, Betty;

I just tested this solution, so it should work for you, too.

Create a new visibility scenario, and reject all smtp commands. Then, assign that scenario to the list.

I used the following:
$SYSCONFDIR/scenari/visibility.super-secret
title.gettext The list is only visible to listmasters

is_listmaster([sender])                                            smtp,dkim,md5,smime   -> do_it
true()                                                             smtp,dkim,md5,smime   -> reject(reason='visibility_secret')

Here's the documentation I used:
-- 
Stephen A. Jarjoura
Collaborative Services
Boston College



On Mon, May 1, 2023 at 2:03 PM Widerski, Betty <address@concealed> wrote:

We have some student lists whose subscribers need to be hidden until certain status announcements are made. We would like to be able to quiet load the lists’ subscribers earlier than the announcements, but do not want any savvy users to send a “which” email command that would tell them they were subscribed to any list in that group. Is there a parameter I can set by list not to report the list in a “which” command?

 

I tried setting Subscription profile (default_user_options) visibility (visibility) to “conceal” but that didn’t block the “which” command (and didn’t block the user seeing the list in “my lists”)

 

If there is no way to do this per list, is there a configuration parameter whereby I can block ALL email commands to all lists if necessary?

 

Thanks

Betty

 

Betty Widerski

Cloud & Server Engineering – HBS Information Technology

HARVARD  BUSINESS  SCHOOL     

Shad 108 N | address@concealed | T: 617.495.6642

 




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