Too many invalid recipients .

[The_Hermit_1971]

I get this error everytime I try to send email with Outlook Express: An unknown error has occurred. Account: 'mail.centennialpr.net', Server: 'mail.centennialpr.net', Protocol: SMTP, Server Response: '550 Too many invalid recipients', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC69

Can somebody help me please?

[TranceEnergy]

Here

Off topic, if u can, id recommend using another program then oe.