Server Error 550 5.1.1 – user unknown

29. October 2013 · Write a comment · Categories: Hotmail, Outlook.com · Tags: , ,
Trying to send email to a GMail at a school (Google Apps for Education) from Outlook (NOT GMail) - getting "Server Error 550 5.1.1 - user unknown" bounce back - the email does exist and is getting mail from other addresses - @yahoo, @hotmail, @gmail etc - thoughts? 

windows live mail error 550 (RD109006)

24. October 2013 · Write a comment · Categories: livemail · Tags: , , ,

I sent an e-mail and now I can an error Message:  Server Error 550, Server Response:  550 Invalid mailbox. (RD 109006)  I keep getting
a message to resend.  How can I delete this message?  It is not in my sent box.  Help!

 

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