Lire log QMAIL

Bonjour,
l'une ou l'une d'entre vous peut-il (elle) m'aider à comprendre la log qmail ?
merci d'avance.

Sep 28 10:32:45 societe qmail: 1254126765.556875 new msg 215239
Sep 28 10:32:45 societe qmail: 1254126765.556938 info msg 215239: bytes 15930 from <anonymous@nexen.net> qp 20853 uid 33
Sep 28 10:32:45 societe qmail: 1254126765.569946 end msg 215239
Sep 28 10:57:12 societe qmail: 1254128232.142906 CHKUSER accepted sender: from <me@hotmail.com::> remote <vserver-societe.nexen.net:unknown:65.68.51.61> rcpt <> : sender accepted
Sep 28 10:57:12 societe qmail: 1254128232.385606 CHKUSER rejected relaying: from <me@hotmail.com::> remote <vserver-societe.nexen.net:unknown:65.68.51.61> rcpt <dsns@rul3z.de> : client not allowed to relay

Sep 28 11:08:33 societe qmail: 1254128913.142567 CHKUSER accepted sender: from <moon563@gmail.com::> remote <mailer:unknown:222.170.127.111> rcpt <> : sender accepted
Sep 28 11:08:33 societe qmail: 1254128913.677789 CHKUSER rejected relaying: from <moon563@gmail.com::> remote <mailer:unknown:222.170.127.111> rcpt <wiener@maximumlist.com> : client not allowed to relay