[Mailman-Users] Allow posting from addresses with modifiers?

Grant Taylor gtaylor at tnetconsulting.net
Mon Jan 14 14:09:01 EST 2019

On 01/14/2019 11:13 AM, Mark Sapiro wrote:
> To place the burden on john, he can subscribe both addresses and set 
> john at example.com to nomail.

This is what I have done for many mailing lists.  —  I subscribe with 
one private address for email filtering and reply from another public 
email address.

I suggest that the member also pick one and toggle the option to hide 
(the non-public subscribed address) from other subscribers.

> To place the burden on you, assuming you have access to Mailman's command 
> line tools, you could periodically (via cron) run a script to list the 
> members, find those with '+' in the local part and add the address without 
> the +... in the local part to the list's accept_these_nonmembers. There 
> is a script at <https://www.msapiro.net/scripts/non_members> (mirrored 
> at <https://fog.ccsf.edu/~msapiro/scripts/non_members>) that can do the 
> adding to accept_these_nonmembers.

I don't see any obvious security related down sides to this.  It does 
open the mailing list up to messages (spam) from some additional 
addresses.  But I can't think of any cases where user at domain.tld would 
be different than user+detail at domain.tld.  I guess maybe some sort of 
ticketing system /might/ do something like that.  But I bet that the 
intersection between such configurations and Mailman configured as Mark 
is describing to be quite small.

Grant. . . .
unix || die

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