Troubleshooting
SMTP Problems
My SMTP server tells me that it won't forward a message.
Either the sender or the recipient of the message must belong to the same domain as the SMTP server, or at least the computer you're running your program on must be in the same domain. Forwarding usually invites spammers to forward spam through your server.
| Q1: | If I try to send mail with a sender that doesn't exist, why won't Java Mail let it through? |
| Java Mail checks the sender to make sure it is a valid email address. If you really need to send such mail, use the SMTPSession class. |
Java Mail Problems
| Q1: | Why do I get a ClassNotFoundException for javax.activation.DataSource when I try to use the Java Mail API? |
| The Java Mail API also needs the Java Beans Activation ... |
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