Emails bouncing back - Mail server for (domain) unreachable for too long

Emails bouncing back - Mail server for (domain) unreachable for too long

I have one user who is not receiving emails (I get warning messages for every email sent to her) and another user who is getting bounce back messages when he tries to respond.  Please advise

The bounce back message is as follows:

-----Original Message-----

From: MAILER-DAEMON@yahoo.com [mailto:MAILER-DAEMON@yahoo.com]

Sent: Tuesday, February 02, 2016 11:34 PM

To: r****@ameritech.net

Subject: Failure Notice

 

Sorry, we were unable to deliver your message to the following address.

 

<adminacct@xausergroup.com>:

Mail server for "xausergroup.com" unreachable for too long :

 

--- Below this line is a copy of the message.

 

Received: from [216.39.60.167] by nm5.access.bullet.mail.gq1.yahoo.com with NNFMP; 02 Feb 2016 04:32:55 -0000

Received: from [98.138.226.240] by tm3.access.bullet.mail.gq1.yahoo.com with NNFMP; 02 Feb 2016 04:32:55 -0000

Received: from [127.0.0.1] by smtp111.sbc.mail.ne1.yahoo.com with NNFMP; 02 Feb 2016 04:32:55 -0000

X-Yahoo-Newman-Id: 224172.21233.bm@smtp111.sbc.mail.ne1.yahoo.com

X-Yahoo-Newman-Property: ymail-3

X-YMail-OSG: WxUHA4AVM1nllJLPgzog4jLwliwsxWlJYjKZmSV8vWoEwyJ

 2Q1pmY0il2nFf.7ItMhvaSTbFMT1JKYN59DKq8wytmg6ncKECtu3q55CS1p5

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 _Iw0XZE_onG.DzPsrXC4MvpsUXqNqbtQcxD2m

X-Yahoo-SMTP: su_2kieswBBjkP.VnnCZf3HJMHbVuA--

From: "Rad Yates" <ryates@ameritech.net>

To: "'XA User Group Board'" <adminacct@xausergroup.com>

Subject: Tentative: Online Meeting Details: Session Planning subcommitee

Date: Mon, 1 Feb 2016 23:32:55 -0500

Message-ID: <006f01d15d72$c9a69ed0$5cf3dc70$@ameritech.net>

MIME-Version: 1.0

Content-Type: text/calendar; method=REPLY;

            charset="UTF-8"

Content-Transfer-Encoding: 8bit

X-Mailer: Microsoft Outlook 15.0

Thread-Index: AdFdcrWS4tJzZfJDQUuGRabDVNRwPwAAAUdw

Content-Language: en-us

 

BEGIN:VCALENDAR

PRODID:-//Microsoft Corporation//Outlook 15.0 MIMEDIR//EN

VERSION:2.0

METHOD:REPLY

X-MS-OLK-FORCEINSPECTOROPEN:TRUE

BEGIN:VTIMEZONE

TZID:Eastern Standard Time

BEGIN:STANDARD

DTSTART:16011104T020000

RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11

TZOFFSETFROM:-0400

TZOFFSETTO:-0500

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BEGIN:DAYLIGHT

DTSTART:16010311T020000

RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3

TZOFFSETFROM:-0500

TZOFFSETTO:-0400

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END:VTIMEZONE

BEGIN:VEVENT

ATTENDEE;PARTSTAT=TENTATIVE:mailto:ryates@ameritech.net

CLASS:PUBLIC

COMMENT:I should be home by then…I could be a few minutes late.\n CREATED:20160202T043231Z DTEND;TZID="Eastern Standard Time":20160203T110000 DTSTAMP:20160202T043231Z DTSTART;TZID="Eastern Standard Time":20160203T100000 LAST-MODIFIED:20160202T043231Z LOCATION:http://cp.mcafee.com/d/5fHCN0p6x0idEIfIfTpd78WVKVJZdeXOtTzrWqtTAT4PrWqtTAQrCTQQQn7DCjozgDnRta_45eN_RtxhJpoYJOVJSf-HIadHb7BKndEFLeEA77-LPzwV5CUXHTbFIFLYyOOyVuX_bnhIyyHsQsIYG7DR8OJMddECQPt-hojuv78I9CzATsSjDdqymokXo5Bv-sE4unNV5MK-UebTuv9hEvcWVEVpghIgvbFLCzBQKMYUOn8qMrymSvQ1mG_6k_IjU6CT64SjoK0GhEw5ZAuT7Ph03aPBrPqbNIJRCcZY_CKMZ

            b-d8278c2f8e16 | http://cp.mcafee.com/d/k-Kr4zqb3X3ZSjhOeKrKrvjjKYDtUS-CDtVdNcS-CDtVd6VJZdd5NVVAS8Q9RZniLN1jIvZnokrmmfbsKrtz_GX2zqONVrBPqarPG91N_HYUUehpKeWZOWrar_8IIEKnK_ORQr8EGTd7bfaxVZicHs3jqpJcTvAm4TDNOb2pEVdTdAVPmEBC5eS1pn_Da17BY4bmGT2oTId8_79-vMe9b4WMY66UBJDZ0lGLNBfX4-1FJNxdASbwaAq81vp7JNYQg0OIVmYSyYrsmoP

            umber=323-920-0091\,\,4184086#

PRIORITY:5

SEQUENCE:0

SUMMARY;LANGUAGE=en-us:Tentative: Online Meeting Details: Session Planning

            subcommitee

TRANSP:OPAQUE

UID:EC53D785874F30

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X-MICROSOFT-CDO-BUSYSTATUS:BUSY

X-MICROSOFT-CDO-IMPORTANCE:1

X-MS-OLK-AUTOFILLLOCATION:FALSE

X-MS-OLK-CONFTYPE:0

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END:VCALENDAR