[Mailman-Users] Uknown Mailer Error 1

[Webmaster]

hi,
i keep on getting this error ,i have made the necessary link to the
wrapper,some of it goes out then it stops doing anything.Redhat 6.1 sendmail
8.93
Thanks.
May 25 20:25:43 sendmail[19465]: TAA19464: to="|/home/mailman/mail/wrapper
mailowner guestlist", delay=00:47:51, xdelay=00:47:50, mailer=prog,
stat=Sent
May 25 20:26:23 sendmail[19215]: TAA19214: to="|/home/mailman/mail/wrapper
mailowner guestlist", delay=00:53:27, xdelay=00:53:27, mailer=prog,
stat=unknown mailer error 1
May 25 20:26:23 sendmail[19215]: TAA19214: UAA19215: postmaster notify:
unknown mailer error 1
May 25 20:26:23 sendmail[19215]: UAA19215: to=root, delay=00:00:00,
xdelay=00:00:00, mailer=local, stat=Sent