On Fri, 18 Jan 2002, Dave wrote:
...cut, cut...
> Maybe there is a better way to do what I want:
>
>  I have a master mailing list containing all subscribers "A".
>  I want to send mail to a new set of subscribers "B".
>  There may be some overlap between subscribers in "A" and "B".

Maybe you could use TOPICS (e.g., set some subscribers to TOPIC
A, some to B, some to A,B), and then send postings to TOPIC A
subscribers (or to B, or to both)? I don't really understand
your requirement fully, and you don't explain how you identify
which group, A or B (or both) a subscriber qualifies for (so
that we can discuss how best to "tag" that subscriber in order
to meet your goal of sending him a posting).

In any case, your subscribers have control over changing their
SETtings for MAIL/NOMAIL and for TOPICS, so neither of these
approaches (mine above, yours below) are reliable.

Peter

>  I want all subscribers to remain in the list to handle unsubscribes.
>
> Currently I am doing this:
>
>  QUIET SET LISTNAME NOMAIL FOR *
>  QUIET DEL LISTNAME DD=DELLIST BRIEF PW=xxx
>  //DELIST DD *
>  << all subscribers in "B" >>
>  /*
>  ADD LISTNAME DD=ADDLIST IMPORTPW=xxx
>  //ADDLIST DD *
>  << all subscribers in "B" >>
>  /*
>
> The desired result is that the list contains all subscribers in "A" plus
> "B", but those in "A" and NOT in "B" are set to NOMAIL.