I see...here is what we currently have coded... javax.mail.internet.MimeMessage message; javax.mail.Session session = Session.getDefaultInstance(systemProp, null);
. . . message = new MimeMessage(session); . . . message.addRecipient(Message.RecipientType.TO, new InternetAddress("some address")); The last line above is the offending line in the stack trace that is just before the step into the "addRecipient" method above. ( com.amica.framework.services.OutboundEmailMgr.send(OutboundEmailMgr.java:109) ) So, I'm very confident that the above line is the one in question. It seems to me that we are in fact using the version of the method as recommended by your reply. Am I correct in that assumption? Is there some other approach we should be taking or should we wait for 1.1? Thanks for your reply! Fran -- View this message in context: http://www.nabble.com/Issue+using+JavaMail+with+Geronimo+1.0-t1674954.html#a4541414 Sent from the Apache Geronimo - Users forum at Nabble.com.