[Mailman-Users] problem using mailman +sendmail on debian 3.0

[Lindo Nepi]

hi all
i'm using mailman 2.0.11 on a debian 3.0 with sendmail

(sendmail 8.12.3) 

when i try to post on my mailinglist , or i mail to a "-request" address (for example if i must subscribe myself on a mailinglist) i don't receive any response from mailman...any mail..any error in logs...any error in sendmail 

in my /var/log/mail.log i have found
Oct 18 18:36:24 2002 (21076) lugancona-list: pending and747 at libero.it  ppp-219-183.27-151.libero.it


Oct 22 15:35:30 ascu sm-mta[4827]: g9MDZTOM004827: from=<ascoli at ascu.unian.it>,
size=368, class=0, nrcpts=1, msgid=<200210221335.g9MDZTpU004826 at ascu.unian.it>,
proto=ESMTP, daemon=MSA, relay=ascoli at localhost [127.0.0.1]
Oct 22 15:35:30 ascu sendmail[4826]: g9MDZTpU004826: to=lugancona3-list-request at ascu.unian.it, ctladdr=ascoli (614/200), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30062, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (g9MDZTOM004827 Message accepted for delivery)
Oct 22 15:35:30 ascu sm-mta[4829]: g9MDZTOM004827: to="|/var/lib/mailman/mail/wrapper mailcmd lugancona3-list", ctladdr=<lugancona3-list-request at ascu.unian.it>
(8/0), delay=00:00:00, xdelay=00:00:00, mailer=prog, pri=30683, dsn=2.0.0, stat=Sent