I consider that any site which has agreed to be on the DISTRIBUTE backbone has implicitly agreed to keep their software up to date enough to support that backbone. If they are not up 1.5i, turf them off the backbone until they get their act together. I've seen lots of arguments why LISTSERV can't be updated in a timely fashion. Anyone making those arguments should be allowed to limp along with what they have. But, they shouldn't be in a position to slow down the growth of the network. >>>>> Changing hats <<<<<< Growth on the network should be upward compatible. If I'm not keeping up, I can be demoted, by being yanked off the backbone. But, my machine should never have it's local functions interrupted because of a change out in the network. Is it possible to remove the 1.5H sites from the backbone before adding this flurry of new sites?