Sendmail - premature EOM

Alguém saberia me dizer que erro é este?

Dec 13 09:48:10 wnt sm-mta-rx[28702]: iBDBlMXG028702: collect: premature EOM: Connection reset by tempo9.wnetrj.com.br
Dec 13 09:48:10 wnt sm-mta-rx[28702]: iBDBlMXG028702: SYSERR(root): collect: I/O error on connection from tempo9.wnetrj.com.br, from=<[email protected]>
Dec 13 09:48:10 wnt sm-mta-rx[28702]: iBDBlMXG028702: from=<[email protected]>, size=63, class=0, nrcpts=1, proto=ESMTP, daemon=MTA-RX, relay=tempo9.wnetrj.com.br [200.255.52.9]