Brad Knowles wrote:
On 8/7/07, DAve wrote:

The client is asking for the ability to manage list messages in a new
way. We are unable to do so using our current software, ezmlm. Here is
the scoop. The client has twenty mail lists, and subscribers can sign up
for any number of lists. The client wants to be able to send a common
message to some lists without sending duplicate messages if a subscriber
is on more then one list.
Mailman is able to eliminate some duplicate messages, depending on the
exact nature of the situation. In particular, if the headers show that
a certain address is a named recipient in the "To:" or "Cc:" headers but
is also a subscriber to the list, then the additional list copy can be

However, one list has no idea what the other lists are doing, or what
traffic may have already been sent through there. So, if the same
message is posted to multiple lists and the same person is subscribed to
multiple lists, then they'd still get multiple copies. I don't see any
obvious way around that problem.
As we understand it you can have topics, and subscribers will only
receive messages directed at the topics they subscribe to. This means a
subscriber could subscribe to [members], [stores], and [retailers], if
we send a message to [stores] they will receive it. If we send a message
to all topics, subscribers will receive only one message. This is what
we want.
As far as it goes, that sounds correct.
However, if we send a message only to [stores] and to [members],
subscribers will receive two copies. This is not what we want.
If there's just one list, with multiple topics, then a recipient on that
list should only get one copy of the message, even if they're subscribed
to multiple topics.

At least, that's the way I understand it.
So in the idea of an announcement only list, we should be able to have
the list owner post a message to multiple topics, correct? I did not see
where cross posting a message to multiple topics within a single list
was possible. Do you know if it is?
It is not clear to us from the docs or from any information we have been
able to find. Thanks,
If I haven't been able to clarify this issue for you, please let me know.
Thank you very much.


Three years now I've asked Google why they don't have a
logo change for Memorial Day. Why do they choose to do logos
for other non-international holidays, but nothing for

Maybe they forgot who made that choice possible.

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groupmailman-users @
postedAug 7, '07 at 3:19p
activeAug 20, '07 at 3:07p

3 users in discussion

DAve: 5 posts Brad Knowles: 3 posts Mark Sapiro: 1 post



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