Thank you for your advice. But I got another error message:
無法傳送郵件,因為伺服器拒絕寄件者的電子郵件地址。寄件者的地址是 [email=]'xxxxxx@newsgroup.hk'[/email]。 主旨 'Test1', 帳戶: 'mail.newsgroup.hk', 伺服器: 'mail.newsgroup.hk', 通訊協定: SMTP, 伺服器回應: '530 Authentication required', 連接埠: 587, 安全(SSL): 否, 伺服器錯誤: 530, 錯誤碼: 0x800CCC78
Do you have any idea how to fix that?
Thank you in advance!