I am using an AIX server to relay smtp messages from one subnet to our main Smart relay host. I am also trying to send mail through it using a java application on our webserver. The Java application complains that the "Domain" can't be found for my "FROM" field???? I think this is a setting in the java application but I want to rule out any other reasons so I would like to capture the traffic that goes to my sendmail relay to make sure that NOTHING is going through there... can this be done? and are there log files for sendmail?