Let's say you end up with something like this:

GETPOST LSTOWN-L 5056 5091 5140 5259 5261 5339 5467 5525-5526 5530-5531 5541
5575-5576 5614 5620 5747 5756 5762 5770 5816 5827 5831 5852 5873 5890 5896
5909 6107 6190-6191 6232 6244 6290 6406 6450 6516 6527 6534 6550 6641 6724
6726 6796 6798 6833 6838 6878 6994 7028 7032 7039 7090 7094 7097 7105 7135
7142 7158 7185 7196 7204-7205 7226 7234 7270 7316 7348 7399 7411 7466
7468-7470 7474 7479 7495 7498 7514 7527 7546-7547 7575 7581 7595 7597
7608-7609 7618-7619 7626 7640-7641 7661 7676 7688 7696 7698-7699 7716

In order for LISTSERV to accept this, you actually have to reformat it a bit
and use continuation cards.  Like this:

// GETPOST LSTOWN-L 5056 5091 5140 5259 5261 5339 5467 5525-5526 5530-5531 5541
5575-5576 5614 5620 5747 5756 5762 5770 5816 5827 5831 5852 5873 5890 5896 ,
5909 6107 6190-6191 6232 6244 6290 6406 6450 6516 6527 6534 6550 6641 6724 ,
6726 6796 6798 6833 6838 6878 6994 7028 7032 7039 7090 7094 7097 7105 7135 ,
7142 7158 7185 7196 7204-7205 7226 7234 7270 7316 7348 7399 7411 7466 ,
7468-7470 7474 7479 7495 7498 7514 7527 7546-7547 7575 7581 7595 7597 ,
7608-7609 7618-7619 7626 7640-7641 7661 7676 7688 7696 7698-7699 7716

Note that the space following "//" on the first line and the spaces preceding
the commas at the end of all but the last line are required.

The other thing you can do (of course) is split these up into separate
GETPOST command lines.

Nathan