Delivery Status Notification (Failure)

I'm using Windows Live mail and today everything I try and send comes back with

Delivery Status Notification (Failure).

Any suggestions would be appreciated.
Thanks,
Pete

please post log of any error code details. Is it to the same recipient or have you tried other recipients?

Thanks for the quick reply.
All the message says is:
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.

PeteMorrison@live.com

The att.dat reads:
Reporting-MTA: dns;COL004-WSS1S2.hotmail.com
Received-From-MTA: dns;BAY178-DS21
Arrival-Date: Wed, 23 Dec 2015 12:58:45 -0800

Final-Recipient: rfc822;PeteMorrison@live.com
Action: failed
Status: 5.6.2
Diagnostic-Code: smtp;554 5.6.2 Delivery SMTP Error. Command: 3. Response: 535 5.7.8 Sorry.
. Type=1 (1908582017:817:-2147418113)


When I right click and hit properties, this comes up:
x-store-info6taffyBScEUZsL+ZXbbDoZx0yi5SZysVDCEO1cb97ZQjyDofPCiQDk8xQC5Y4Cz/1XFSYkhGb7fbKtQsiC6NZk0aVbyJ7Xi1SC+ebInq8kRmi+q3duWyD8otbbExgJ1TrztIG8pP1s=
Authentication-Results: hotmail.com; spf=none (sender IP is 157.56.23.9; identity alignment result is pass and alignment mode is relaxed) smtp.helo=COL004-WSS1S2.hotmail.com; dkim=none (identity alignment result is pass and alignment mode is relaxed) header.d=mail.hotmail.com; x-hmca=none header.id=postmaster@mail.hotmail.com
X-SID-PRA: postmaster@mail.hotmail.com
X-AUTH-Result: NONE
X-SID-Result: NONE
X-Message-Delivery: Vj0xLjE7RD0wO0dEPTA7U0NMPTk7bD0xO3VzPTE=
X-Message-Info: AuEzbeVr9u5fkDpn2vR5iCu5wb6HBeY4iruBjnutBzpStnUabbM/X3OHG1tkHI7a3kMiU15mwZkdItk0fkPUd26iJME4hbgAI/g6pso0ZyhNg56ZZ1m7HYggJozy30f9m+/lh4bz4Xg+pw3lD+4aCsZ15E58nwu+MZCcMrf+yIE2CB8bXQloIQ==
Received: from COL004-WSS1S2.hotmail.com ([157.56.23.9]) by BAY004-MC6F18.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.23143);
Wed, 23 Dec 2015 12:58:46 -0800
From: postmaster@mail.hotmail.com
To: petemorrison@live.com
Date: Wed, 23 Dec 2015 12:58:46 -0800
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="9B095B5ADSN=_01D13DBFADB15B9100000213COL004?WSS1S2.ho"
X-DSNContext: 7ce717b1 - 1160 - 00000002 - 00000000
Message-ID: <FRaqbC8wS00000075@COL004-WSS1S2.hotmail.com>
Subject: Delivery Status Notification (Failure)
Return-Path: <>
X-OriginalArrivalTime: 23 Dec 2015 20:58:46.0560 (UTC) FILETIME=[B71EFA00:01D13DC4]

I should have added that this comes back from everyone I am emailing today from Windows Live Mail.

I'm not sure of your computing level, but have you verified normal internet connection? Can you load webpages? I'm assuming you can if you're using the same computer to communicate on this forum. If you know your outgoing email server, try to ping that in the command prompt and see if you get a response and see if it's alive. Also make sure your username/password are all fine.

I am using the same computer. When I use Outlook on the same computer, I can send to my Live Mail account without any problem. It also works when I use my cell phone. I know I should just switch to Outlook, but I much prefer Live's layout and ability to show several email addresses separately. I had posted the information in a returned att.dat file, but a message said that had to be approved before it could be posted.
Pete

From the att.dat file received when the mail was returned:
Reporting-MTA: dns;COL004-WSS1S2.hotmail.com
Received-From-MTA: dns;BAY178-DS13
Arrival-Date: Wed, 23 Dec 2015 14:16:52 -0800

Final-Recipient: rfc822;PeteMorrison@live.com
Action: failed
Status: 5.6.2
Diagnostic-Code: smtp;554 5.6.2 Delivery SMTP Error. Command: 3. Response: 535 5.7.8 Sorry.
. Type=1 (1908582017:817:-2147418113)

possibly something to do with authentication. Does your mail server require outgoing email authentication? You may have to check that checkbox in the live mail server settings and input your username/password.