Warning: fopen(/domains/smtp-error-codes.info/public_html/bezoekers.log): failed to open stream: Permission denied in /domains/smtp-error-codes.info/public_html/includes/log_bezoeker.inc on line 15 Warning: fwrite() expects parameter 1 to be resource, boolean given in /domains/smtp-error-codes.info/public_html/includes/log_bezoeker.inc on line 16 Warning: fclose() expects parameter 1 to be resource, boolean given in /domains/smtp-error-codes.info/public_html/includes/log_bezoeker.inc on line 17 Hotmail bounce message 550 DY-001
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Hotmail bounce message 550 DY-001

Mail rejected by Outlook for policy reasons. We generally do not accept email from dynamic IP's as they are not typically used to deliver unauthenticated SMTP email to an Internet mail server. If you are not an email/network admin please contact your Email/Internet Service Provider for help. http://www.spamhaus.org maintains lists of dynamic and residential IP addresses.

Stop all this jibber jabber, what does it mean?

Hotmail only accepts email from official SMTP servers and according to Hotmail, you have been trying to send email to Hotmail users with a server or computer that is not a real SMTP server.

Did I do something wrong?

Most likely yes. It is also possible that you have a virus on your computer that was trying to send email to Hotmail users without your knowledge.

How can I fix this?