When sending mail to LISTSERV or to a list, I get the error "sh: lsv_amin not available for sendmail programs," ie,

  ----- The following addresses had permanent fatal errors -----
"|/usr/local/bin/lsv_amin /home/listserv/spool owner-listserv"
   (expanded from: owner-listserv)

  ----- Transcript of session follows -----
sh: lsv_amin not available for sendmail programs
554 "|/usr/local/bin/lsv_amin /home/listserv/spool owner-listserv"... Service
550 MAILER-DAEMON... User unknown

This error indicates that you are running sendmail with a sendmail restricted shell, from which only authorized programs may be run. One such shell is "smrsh", which typically is configured by placing symbolic links from /usr/adm/sm.bin/ to the programs which are authorized. (On some recent Red Hat and possibly other systems the link is made to /etc/smrsh -- just note that this may be system dependent and be sure to read your sendmail restricted shell documentation carefully.)