It would appear from INFO KEYWORDS: ***************************** * Daily-Threshold= <number> * ***************************** This keyword limits the number of postings that may be processed by the list in a 24 hour period. The default is Daily-Threshold= 50. When the keyword's value is reached, the list is automatically placed on hold, and the list owner or LISTSERV maintainer must issue the FREE <listname> command. Note that it may or may not be advisable to increase this parameter for higher-volume lists - individual list owners should study the issue carefully before increasing the daily threshold of their high-volume lists.