Outlook. Not receiving or sending emails

I called AT&T and they said it was Microsoft issue. The outbound mail was sent from ******@me.com via the Apple email on Mac to all the emails "IN RED" at end of message below. Tried from iPhone as well. Mail did get through to @frankconcerns and @gmail. NOT .live or .outlook.

========

This is a system-generated message to inform you that your email could not

be delivered to one or more recipients. Details of the email and the error are as follows:

<******@outlook.com>: host

   outlook-com.olc.protection.outlook.com[52.101.68.37] said: 550 5.7.1

   Unfortunately, messages from [57.103.73.189] weren't sent. Please contact

   your Internet service provider since part of their network is on our block

   list (S3150). You can also refer your provider to

    http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol

   Filter Agent][AGT=PFA][MxId=11BAFAAA92D8E174]

   [BN2PEPF000044A8.namprd04.prod.outlook.com 2025-04-19T11:23:27.592Z

   08DD7D554BCCD699] (in reply to MAIL FROM command)

<******@outlook.com>: host

   outlook-com.olc.protection.outlook.com[52.101.8.35] said: 550 5.7.1

   Unfortunately, messages from [57.103.72.13] weren't sent. Please contact

   your Internet service provider since part of their network is on our block

   list (S3150). You can also refer your provider to

    http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol

   Filter Agent][AGT=PFA][MxId=11BAFACD8BBDC18B]

   [CH2PEPF0000013B.namprd02.prod.outlook.com 2025-04-19T11:23:28.108Z

   08DD7D66C83B84C5] (in reply to MAIL FROM command)

<******@live.com>: host live-com.olc.protection.outlook.com[52.101.68.33]

   said: 550 5.7.1 Unfortunately, messages from [57.103.72.138] weren't sent.

   Please contact your Internet service provider since part of their network

   is on our block list (S3150). You can also refer your provider to

    http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol

   Filter Agent][AGT=PFA][MxId=11BAFADAFEC60499]

   [DU2PEPF0001E9C4.eurprd03.prod.outlook.com 2025-04-19T11:23:28.248Z

   08DD7D6D824E2E1D] (in reply to MAIL FROM command)

Reporting-MTA: dns; outbound.ms.icloud.com

X-Postfix-Queue-ID: E9AC5180032A

X-Postfix-Sender: rfc822; ******@me.com

Arrival-Date: Sat, 19 Apr 2025 11:23:24 +0000 (UTC)

Final-Recipient: rfc822; *********@***********

Original-Recipient: rfc822;******@outlook.com

Action: failed

Status: 5.7.1

Remote-MTA: dns; outlook-com.olc.protection.outlook.com

Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [57.103.73.189]

   weren't sent. Please contact your Internet service provider since part of

   their network is on our block list (S3150). You can also refer your

   provider to  http://mail.live.com/mail/troubleshooting.aspx#errors.

   [Name=Protocol Filter Agent][AGT=PFA][MxId=11BAFAAA92D8E174]

   [BN2PEPF000044A8.namprd04.prod.outlook.com 2025-04-19T11:23:27.592Z

   08DD7D554BCCD699]

Final-Recipient: rfc822; *************@***********

Original-Recipient: rfc822;******@outlook.com

Action: failed

Status: 5.7.1

Remote-MTA: dns; outlook-com.olc.protection.outlook.com

Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [57.103.72.13]

   weren't sent. Please contact your Internet service provider since part of

   their network is on our block list (S3150). You can also refer your

   provider to  http://mail.live.com/mail/troubleshooting.aspx#errors.

   [Name=Protocol Filter Agent][AGT=PFA][MxId=11BAFACD8BBDC18B]

   [CH2PEPF0000013B.namprd02.prod.outlook.com 2025-04-19T11:23:28.108Z

   08DD7D66C83B84C5]

Final-Recipient: rfc822; *********@********

Original-Recipient: rfc822;******@live.com

Action: failed

Status: 5.7.1

Remote-MTA: dns; live-com.olc.protection.outlook.com

Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [57.103.72.138]

   weren't sent. Please contact your Internet service provider since part of

   their network is on our block list (S3150). You can also refer your

   provider to  http://mail.live.com/mail/troubleshooting.aspx#errors.

   [Name=Protocol Filter Agent][AGT=PFA][MxId=11BAFADAFEC60499]

   [DU2PEPF0001E9C4.eurprd03.prod.outlook.com 2025-04-19T11:23:28.248Z

   08DD7D6D824E2E1D]

Return-Path: <******@me.com>

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=me.com; s=1a1hai;

        bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=;

        h=From:Content-Type:Mime-Version:Date:Subject:Message-Id:To:x-icloud-hme;

        b=O1Vy/XY5TTjB4YFFrfmVRB//0ejHSRvE9IrNr+5l9b8ZiLioUmaGK6kNHZ7XNPSOI

         zVtFKlyIevdS3y/R+AtkICqjfmw2RP1ao5SUUA1vKB6VT786INYhzArhxWHbdBT+xk

         mYZTVwpsoXVO+WMFjJgQn92FRi5GeJCit9Rts7pE2AMN94X0Vd6JJkH54KhbZp3n1C

         yTxfiye3xJ88M+IgtPZxYNGDE+BUhNN3gudtQ78gX1kpeQE+qwXuvcEpEiLfy+OFjQ

         LL0OJrWtoGZxuLIv/OvFFu30OTR7VV39xH+7xoVN3DzkmEkzxzeu/Xv0jviMCTtdeG

         nEs/ad2nQ+F9w==

Received: from smtpclient.apple (ms-asmtp-me-k8s.p00.prod.me.com [17.57.154.37])

        by outbound.ms.icloud.com (Postfix) with ESMTPSA id E9AC5180032A;

        Sat, 19 Apr 2025 11:23:24 +0000 (UTC)

From: Francis Tyminski <******@me.com>

Content-Type: text/plain

Content-Transfer-Encoding: 7bit

Mime-Version: 1.0 (Mac OS X Mail 16.0 (3826.500.181.1.5))

Date: Sat, 19 Apr 2025 06:23:13 -0500

Subject: me.com Calling all mail

Message-Id: <******@me.com>

To: Frank Tyminski <******@outlook.com>,

Frank Tyminski <******@live.com>,

Frank Tyminski <******@frankconcerns.com>,

Frank Tyminski <******@gmail.com>

X-Mailer: Apple Mail (2.3826.500.181.1.5)

X-Proofpoint-GUID: b4fOLkPPoUhzqowYwDiCmwMBVKNHp13z

X-Proofpoint-ORIG-GUID: b4fOLkPPoUhzqowYwDiCmwMBVKNHp13z

X-Proofpoint-Virus-Version:

X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 phishscore=0 spamscore=0

mlxlogscore=723 bulkscore=0 suspectscore=0 clxscore=1011 mlxscore=0

adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1

engine=8.19.0-2308100000 definitions=main-2504190093

Neither a Microsoft nor an AT&T issue, the problem lies with Apple. The addresses listed as problem sources, 57.103.73.189, 57.103.72.13, 57.103.72.138, all belong to Apple and all three are listed in several RBL (Relay Blackhole List) databases; RBL addresses are Spam sources, most email systems will block traffic from them, which is what you're seeing. So, Apple, (I assume Apple Mail) needs to be contacted and made aware that these three addresses they own appear on several RBL lists. More info is in this Microsoft Support article:

Troubleshooting

Thank you Hal. I will contact Apple.

On further "think-back" this started after a recent MacOS security upgrade.

There was only one AppleMail address, affecting receipts of several MS outlook/live accounts.

Gmail, Yahoo and MSFT business accounts were unaffected.

It seems to have self-repaired.

I need the help of a human being. I've had a techie look at it and he couldn't figure it out. My Outlook on my Mac won't send or receive emails. Not of your suggestions listed helps at all. HELP!!!! Maya Ollson

I discovered that someone had hacked my account and was forwarding all email to another account. A really clever way to steal information. I wish I remembered exactly where that choice was, but once I turned it off, changed my password, i was back up and functioning well again. I unfortunately did not save the emails the messages wre forwarded to, so I could not include that in y report to the FBI.

Good luck