[Mailman-Users] Fwd: BCC and bounces

Borja Riesgo Juan borjariesgo at gmail.com
Wed Oct 14 12:37:23 CEST 2015

What is the use of "undisclosed recpients" for?

i wan t to try this for see the efect on a user. how can i do that? No w i
don´t know how to do that.

Un saludo

Borja Riesgo
borjariesgo at gmail.com

2015-10-13 11:33 GMT+02:00 Stephen J. Turnbull <stephen at xemacs.org>:

> Borja Riesgo Juan writes:
>  > how can i display "undisclosed recpiets"? I remmeber that in first
> testing
>  > i´ve got this.
> I don't understand what you want to do.  My first guess is you just
> want to put "undisclosed recipients" in the addressee field.  That's
> easy.  You can put the string "Undisclosed recipients:;" (without the
> quotes) in any address field, and your recipients will see that
> string.  (If they don't, it's their MUA doing something weird.)
> Technically, it is an empty address group (if there were any
> addresses, they would appear between the ":" and the ";").
> My second guess is you want to be able to see the addresses that
> weren't disclosed.  You can't.  There aren't any.  Instead, the MTA
> contacts the receiving MTA and tells it who to deliver to as a
> separate command (this is often referred to as the "envelope
> address").  So if you get such a message and you're not in the To: or
> Cc: header, you're one of the "undisclosed recipients", but you can't
> find out who any others are.  And nobody except the sender (and
> anybody she tells) can find out who they are.
> Note that there's no guarantee that mail was sent to *any* undisclosed
> addresses.  It's just a string that is ignored by mail programs, like
> a comment.
> Steve

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