Hi all, topology: java/tomcat app mailing to the outside via a C7 postfix relay server. problem: java app submits mail to postfix but there is _nothing_ logged in the postfix maillog. This happen for 2/3 of all mail submitted. We cannot see any trace of this submitted mail either incoming/stored/outgoing. Log from java app (shortened): DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc] DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: trying to connect to host "xxxxxxxx", port 25, isSSL false DEBUG SMTP: Attempt to authenticate AUTH LOGIN 235 2.7.0 Authentication successful DEBUG SMTP: use8bit false DEBUG SMTP: Verified Addresses DATA 354 End data with <CR><LF>.<CR><LF> ****message text*** 250 2.0.0 Ok: queued as 8D83AC2756DF QUIT 221 2.0.0 Bye Log from the postfix server: [root at xxx postfix]# grep 8D83AC2756DF /var/log/maillog [root at xxx postfix]# This happens for 2/3 of all messages send to this server. Any idea what is happening here? Thx Rainer