Trying to send a message to a friend from my hot mail to her gmail
But I keep getting an auto email saying the delivery to the following recipient
has failed. I even tried from my yahoo account and I got the same failure message.
Which is weird because she just emailed me 3 times from her same email 2 days
ago.
There is some sort of problem when Outlook.com (or live.com as this account is) email users send to my mail server.  I just sent myself a test and, within 5 seconds, Outlook.com popped up with a DSN failure message.  I am able to send to gmail successfully.  Clients and partners who use outlook.com, though, are having trouble sending me email.

Meanwhile, no Microsoft mail server tries to connect to my mail server, so I'm seeing a DSN failure when delivery isn't even attempted.

What can I do to help resolve this?
Hi myself abhi and i am not able to send the mails to any of the address but i am able to receive the message from the opposite person, 
when i send mail it gives me a error ("delivery status notification failure" from *** Email address is removed for privacy ***) 
   please help me out to get out of this problem. thank you.
Hi,

I've tried replying to an email I've received from an account I know exists. I've been emailing this person for the last 7 weeks.

It comes up as Delivery Status Notification (Failure)

With information that: 

Action: failed

Status: 5.5.0

Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does not exist.


Can anyone help?


Thanks


Rebecca