>I'm asking this for a postmaster in Massachusetts whose system is about
>to change the "From" field.  His question:  "How do we handle changing
>our users' subscriptions to LISTSERVs?  Once we change our from field,
>they will not be able to UNSUB from their lists.  Do you have any advice?
>Is there a way to tell ALL LISTS change all xxx.xxx.xxx.xxx addresses to
>whatever it is that we have decided we need to call ourselves?"
 
The answer depends on some specific scenarios e.g., if the host was a
BITNET site (registered in the BITEARN NODES db), then using the
:NEWNODE tag would be of great benefit.  (GET the file LEAVING BITNET
from LISTSERV@bitnic (@bitnic.educom.edu).)
 
If this is an Internet-only (or gateway address), then the host's
Domain Name sysadmin could do some razzle-dazzle ;-) that could
(possibly) obviate or ameliorate the need by using CNAME or MX
records.
 
If not, then I don't know of any automated way (but others might).
 
/Pete ([log in to unmask])  --  co-owner  LDBASE-L, TQM-L, CPARK-L, et -L
--
Peter M. Weiss         "The 'NET' never naps"             +1 814 863 1843
31 Shields Bldg. -- Penn State Univ -- University Park, PA 16802-1202 USA