Excerpt from CU-SeeMe-L listserv instructions:
Users may choose from among certain options regarding how listserv
will interact with them. To change these options, you must send a
command in electronic mail to LISTSERV@cornell.edu (once again, NOT to
CU-SEEME-L@cornell.edu), saying:
SET CU-SEEME-L MAIL option
where 'option' can be one of:
NOACK -- Do not send me my own postings back
ACK -- Send me my own postings back
DIGEST -- Send me a periodic digest of postings
or POSTPONE -- Do not send me *anything* until I change back to
one of the other three.
For example: SET CU-SEEME-L MAIL DIGEST would cause you to start
getting digests. Note that the word "MAIL" is required.