I'm using smtproutes with entry :machine.domain.com On a RH Linux machine all is working great on a SCO UNIX I get this deferral message in syslog: Feb 3 00:34:45 bd2001 qmail: 918002085.240000 delivery 33: deferral: Connected_ to_209.52.99.25_but_connection_died._(#4.4.2)/ The .25 machine is also running qmail. I have the SCO machine in rcpthosts ( also tried without ) The Linux machine didn't need an entry, it worked without. Both machines are configured same with reference to qmail and cyrus. Any suggestions greatly appreciated. Heinz