We have one alumni announcement ist with 180,000 members. Thankfully it is only used once a month and we do restrict it to non-prime time with the PRIME= NO header. :-) At 2:46 PM -0500 12/3/08, John Mangione wrote about List Recipient Quantity Maximum: >Hello, all. > > > >I'm putting together a superlist that will include several sublists, >each of which may contain sublists and/or hundreds of members. > > > >Has anyone come across practical limits to the ultimate number of >recipients that should be on a list? Furthermore, have you found any >ways that would improve performance (or, at least not cause the server >performance to degrade or, worse yet, cause the server to crash)? > > > >Thanks in advance for your information. > > > >Listserv Admin Newbie... > >John Mangione > >[log in to unmask] -- Good friends are hard to find, harder to leave, and impossible to forget. Bill Verity - 814-865-4758 Fax: 814-863-7049 204S Wagner Building - Information Technology Services, Penn State University At the office - on my Mac, of course ;-)