Emails to Hotmail, Live, not being received


Nov 14, 2019
United Kingdom
cPanel Access Level
Website Owner
Hi there,
I'm using email accounts on my cpanel shared hosting server, but when sending emails from the web client, MS Outlook or within my website these emails aren't being received by any hotmail, live or accounts. The domain is on the safe senders list for all of the types of accounts but for some reason these aren't going through. Nothing is bouncing back with error messages and email is sending fine to other email providers such as Gmail or private domains.


Well-Known Member
Oct 19, 2012
Orlando, FL
cPanel Access Level
Root Administrator
You need to submit a support request to Microsoft.

You should get an automated response fairly quickly. Them taking action could be anywhere from a few days to a week+. They used to be faster but the last couple of times I had to contact them was slow.

IF they don't find any specific spam issue from your server they will unblock the IPs which then can take up to 48 hours to propagate across their servers.


Nov 14, 2019
United Kingdom
cPanel Access Level
Website Owner
I’ve been reading other forums and they recommend switching to the remote mail server as opposed to the local one. This now sends emails which can be received by hotmail, however any replies back get the following error:

Any help would be really appreciated. your message to the following email addresses:
Your message couldn't be delivered because an email server outside Office 365 reported an error that it couldn't relay your message. It's likely that the email server isn't correctly set up to receive and relay messages from your domain. To fix this, forward this non-delivery report (NDR) message to your email admin.
For Email Admins
The sender's message was routed to an email server outside Office 365 but that email server returned the error below. It's likely that the email server that reported error isn't set up correctly to receive and relay messages sent from the sender's domain. The server is not an Office 365 server - it will usually be one of your on-premises servers in a hybrid environment, a smart host email service that you're trying to route messages through, or possibly even an email hosting service you used in the past yet still have mail flow settings pointing to (e.g. your MX record at your domain registrar still points to your previous email service provider).
To fix this, check the server name to determine what domain, service, or server is reporting the error. The email server needs to be configured to either accept messages from anonymous users or to include the sending domain or sending IP address in its list of authenticated senders. On an Exchange server, you can set this up in the server's receive connector. If it's a smart host managed by another service or partner, contact the service or partner to configure their servers to accept and relay messages from your senders. Also, work with your domain registrar to make sure your MX records are properly configured.
Since the problem is likely due to misconfigured settings on an email server outside Office 365, unfortunately Office 365 support won't be able to help fix this issue.

Code: gave this error:

Remote server returned authentication required to relay -> 550 Please turn on SMTP Authentication in your mail client. ;;( [IPREMOVED]:3310 is not;permitted to relay through this server without authentication.

Diagnostic information for administrators:

Generating server:

[email protected]

Remote Server returned '550 5.7.368 Remote server returned authentication required to relay -> 550 Please turn on SMTP Authentication in your mail client. ;;( [IPREMOVED]:3310 is not;permitted to relay through this server without authentication.'

Original message headers:

ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901;; cv=none;


ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed;;





ARC-Authentication-Results: i=1; 1; spf=none; dmarc=none;

dkim=none; arc=none

Received: from

( by

( with Microsoft SMTP Server (version=TLS1_2,

cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.2451.23; Sat, 16 Nov

2019 08:55:53 +0000

Received: from ( by ( with Microsoft SMTP

Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id

15.20.2451.23 via Frontend Transport; Sat, 16 Nov 2019 08:55:53 +0000

Received: from

([fe80::95c4:c593:412:1098]) by

([fe80::95c4:c593:412:1098%4]) with mapi id 15.20.2451.029; Sat, 16 Nov 2019

08:55:53 +0000

From: Mike Hoft <[email protected]>

To: Mike Hoft <[email protected]>

Subject: Test

Thread-Topic: Test

Thread-Index: AQHVnFunDG/R7jZzNkGZHQ7JvKsg7Q==

Date: Sat, 16 Nov 2019 08:55:53 +0000

Message-ID: <[email protected]>

Accept-Language: en-GB, en-US

Content-Language: en-GB



x-incomingtopheadermarker: OriginalChecksum:029E76E9BCA5470B99FD344853314FE05D4AA82AA3D5A59AFD38C44A59A3A6A3;UpperCasedChecksum:E1D34B9ADE58E50D0776D12D927B80FF3CD635BCD4D8F6C3629E9C17C69195AE;SizeAsReceived:6790;Count:43

x-ms-exchange-messagesentrepresentingtype: 1

x-tmn: [F2Nu6j2DjjP83yrrr/y8/Ur4OrJK44fbXsUKx/3fCG3iaNNz0EoYoH6evCMM0l04]

x-ms-publictraffictype: Email

x-incomingheadercount: 43

x-eopattributedmessage: 0

x-ms-office365-filtering-correlation-id: 15d10915-b7cd-4392-2f31-08d76a72c9b1

x-ms-traffictypediagnostic: AM5EUR03HT159:

x-microsoft-antispam: BCL:0;

x-microsoft-antispam-message-info: 9jGMmm4TS1ZxEHCNWl+06/930L3gv6ILtkwDyBUXIDWY0JdVj7wgkhv1xmAz9v1I

x-ms-exchange-transport-forked: True

Content-Type: text/plain; charset="us-ascii"

Content-ID: <[email protected]ook-5b7ca.templateTenant>

Content-Transfer-Encoding: quoted-printable

MIME-Version: 1.0


X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000

X-MS-Exchange-CrossTenant-Network-Message-Id: 15d10915-b7cd-4392-2f31-08d76a72c9b1

X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000

X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Nov 2019 08:55:53.8373


X-MS-Exchange-CrossTenant-fromentityheader: Internet

X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa

X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM5EUR03HT159
Last edited by a moderator:


Product Owner II
Staff member
Nov 14, 2017

Do you send mail with Outlook365 or are you using the shared server's mail service? What looks like is occurring here is that the mail server is showing it's relaying rather than delivering to your server, meaning you're not authenticating properly or that you don't have the domain's MX configuration set up properly