Hi, we are running Microsoft Outlook 2003 at the business I work at and we can't send out messages to our clients. We are getting this error message and I can't seem to fix it.

The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[emailprotected]'. Subject 'Internet Messages', Account: 'mail.aatmspeedy.com', Server: 'smtpout.secureserver.net', Protocol: SMTP, Server Response: '553 Sorry, over your daily relay limit.', Port: 25, Secure(SSL): No, Server Error: 553, Error Number: 0x800CCC78

I've verified the email address and the Incoming and Outgoing ports/addresses and everything is correct. Any idea because I'm stuck and these messages are important.Sounds like your mail server limits how many outgoing messages you can have per day/week/month. I'd contact your service provider and ask them.OK, thank you. That shouldn't be the case since we are a communication business but I wouldn't put it past the idiots to think we were sending spam since everything LEAVES with the same subject. I'll TRY them now.