can not send email, but can receive email

[ms7.url.com.tw]

Title: �ť�

Hi folks:   I got a problem, I think it could be series. The situation is:   I want to use Email reader to catch email from qmail+vpopmail+tcpserver. First, the mail system will check account/password, I sure it ok, it means this is a legal. Now, I want to send some email to different people by this qmail system, now, the email system response me a error or information message, I can not sure what type of messages, is       the server may not be accepting connection or may be busy,     try connecting again later   But, I can sure my connection works, and just for send/receive email.   What can I do???   Thanks,   mARS