The fact that you cannot imagine a situation in which you would want to prevent
subscribers from leaving a list does not mean that those situations do not 
exist. Perhaps Steve is managing a list for an employer that requires all
employees to be subscribed to the list. Perhaps he is managing a list for a
school that requires all students to be subscribed to the list. Obviously, there
is no way to force subscribers read the messages from the list, or to prevent
them from creating filters to delete messages from the list, but that does not
mean that the individuals who ignore those messages will not be required to
know the content of those messages. The fact you can create a filter to delete
email messages containing policy updates from your employer's HR department does
not mean that those policies do not apply to you.

This question comes up on the LSTSRV-L list from time to time, and inevitably
someone will suggest locking the list, or performing periodic updates. Neither
of these solutions unconditionally meet the requirements outlined in the
question.

-- 
Paul Russell, Senior Systems Administrator
OIT Messaging Services Team
University of Notre Dame
[log in to unmask]


On 12/21/2006 11:23, Cindy wrote:
> No kidding.  Why would you want to do this?  I'd be very wary of
> joining a list you couldn't unsubscribe from.
> 
> Also, I don't believe you can do what you want to do.
> 
> --Cindy
> 
> On 12/21/06, Pete Weiss <[log in to unmask]> wrote:
>> At 10:49 12/21/2006 Thursday, Steve Howie wrote:
>> >Howdy
>> >
>> >Subject line says it all. Is there any way to a) prevent a list 
>> subscriber from unsubscribing from a list and b) prevent the 
>> subscriber from setting their options to NOMAIL?
>>
>>
>> And of course after that, that they read and comprehend the e-mail and 
>> don't just bit-bucket or fwd to dev/null ?
>>
>> ;-)
>>
>> /P
>>
>