Outlook Express send error

  j7 19:59 24 Mar 2004

Help! I can receive e-mails but not send them. The error message says:
'The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ..... Subject 'Re: ...., Account: 'mail.vispa.com', Server: 'smtp.vispa.com', Protocol: SMTP, Server Response: '550 5.7.1 Relaying denied. IP name possibly forged []', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79'
The problem occurs no matter who the e-mail is addressed to.I have checked the server[vispa] but the account details seem correct.
Thank you

  VoG II 20:03 24 Mar 2004
  VoG II 20:04 24 Mar 2004
  j7 21:29 24 Mar 2004

Thank you for your advice. I did as you suggested and placed a checkmark next to My server requires authentication. Unfortunately I still received the same error message when trying to send mail. Any other suggestions gratefully received.

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