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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see root\@localhost for details. Content preview: [https://products.office.com/en-us/CMSImages/Office365Logo_Orange.png?version=b8d100a9-0a8b-8e6a-88e1-ef488fee0470] Your message to jef.stoffels@builtby.be couldn't be delivered. jef.stoffels wasn't f [...] Content analysis details: (1.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [URI: itsme.be] [URI: autozone.com.sa] [URI: linodeusercontent.com] [URI: myfcloudin.com] [URI: manuscriptscientific.com] [URI: builtby.be] [URI: telenet.be] [URI: office365.com] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [52.102.161.13 listed in wl.mailspike.net] 0.0 ARC_VALID Message has a valid ARC signature 0.0 ARC_SIGNED Message has a ARC signature 0.0 KAM_DMARC_STATUS Test Rule for DKIM or SPF Failure with Strict Alignment 0.0 RCVD_IN_VALIDITY_RPBL_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [52.102.161.13 listed in bl.score.senderscore.com] 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. 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X-Spam-Flag: NO --8ac01cfd-2527-4ae7-8b30-884c57558e83 Content-Type: multipart/alternative; differences=Content-Type; boundary="56a41205-d657-4240-92ab-8c6be045b899" --56a41205-d657-4240-92ab-8c6be045b899 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable [https://products.office.com/en-us/CMSImages/Office365Logo_Orange.png?versi= on=3Db8d100a9-0a8b-8e6a-88e1-ef488fee0470] Your message to jef.stoffels@builtby.be couldn't be delivered. jef.stoffels wasn't found at builtby.be. draw Office 365 jef.stoffels Action Required Recipient Unknown To address How to Fix It The address may be misspelled or may not exist. Try one or more of the foll= owing: * Send the message again following these steps: In Outlook, open this n= on-delivery report (NDR) and choose Send Again from the Report ribbon. In O= utlook on the web, select this NDR, then select the link "To send this mess= age again, click here." Then delete and retype the entire recipient address= . If prompted with an Auto-Complete List suggestion don't select it. After = typing the complete address, click Send. * Contact the recipient (by phone, for example) to check that the addre= ss exists and is correct. * The recipient may have set up email forwarding to an incorrect addres= s. Ask them to check that any forwarding they've set up is working correctl= y. * Clear the recipient Auto-Complete List in Outlook or Outlook on the w= eb by following the steps in this article: Fix email delivery issues for er= ror code 5.1.10 in Office 365, and then send the message again. Retype the entire recipient address = before selecting Send. If the problem continues, forward this message to your email admin. If you'= re an email admin, refer to the More Info for Email Admins section below. Was this helpful? Send feedback to Microsoft. ________________________________ More Info for Email Admins Status code: 550 5.1.10 This error occurs because the sender sent a message to an email address hos= ted by Office 365 but the address is incorrect or doesn't exist at the dest= ination domain. The error is reported by the recipient domain's email serve= r, but most often it must be fixed by the person who sent the message. If t= he steps in the How to Fix It section above don't fix the problem, and you'= re the email admin for the recipient, try one or more of the following: The email address exists and is correct - Confirm that the recipient addres= s exists, is correct, and is accepting messages. Synchronize your directories - If you have a hybrid environment and are usi= ng directory synchronization make sure the recipient's email address is syn= ced correctly in both Office 365 and in your on-premises directory. Errant forwarding rule - Check for forwarding rules that aren't behaving as= expected. Forwarding can be set up by an admin via mail flow rules or mail= box forwarding address settings, or by the recipient via the Inbox Rules fe= ature. Recipient has a valid license - Make sure the recipient has an Office 365 l= icense assigned to them. The recipient's email admin can use the Office 365= admin center to assign a license (Users > Active Users > select the recipi= ent > Assigned License > Edit). Mail flow settings and MX records are not correct - Misconfigured mail flow= or MX record settings can cause this error. Check your Office 365 mail flo= w settings to make sure your domain and any mail flow connectors are set up= correctly. Also, work with your domain registrar to make sure the MX recor= ds for your domain are configured correctly. For more information and additional tips to fix this issue, see Fix email d= elivery issues for error code 5.1.10 in Office 365. Original Message Details Created Date: 1/15/2026 12:50:35 AM Sender Address: draw@autozone.com.sa Recipient Address: jef.stoffels@builtby.be Subject: itsme=AE: Bevestiging van uw gegevens op ons portaal Error Details Error: 550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient jef.stoffels@b= uiltby.be not found by SMTP address lookup Message rejected by: DB9P251MB0427.EURP251.PROD.OUTLOOK.COM Notification Details Sent by: DB9P251MB0427.EURP251.PROD.OUTLOOK.COM Message Hops HOP TIME (UTC) FROM TO WITH RELAY TIME 1 1/15/2026 12:50:37 AM 82-210-64-103.access.telenet.be node93.myfcloudin.com esm= tpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.99.1) (enve= lope-from ) 2 sec 2 1/15/2026 12:50:38 AM 172-105-42-26.ip.linodeusercontent.com AMS0EPF000001A2.mai= l.protection.outlook.com Microsoft SMTP Server (version=3DTLS1_3, ciphe= r=3DTLS_AES_256_GCM_SHA384) 1 sec 3 1/15/2026 12:50:38 AM AMS0EPF000001A2.eurprd05.prod.outlook.com AS9PR04CA01= 35.outlook.office365.com Microsoft SMTP Server (version=3DTLS1_3, ciphe= r=3DTLS_AES_256_GCM_SHA384) * 4 1/15/2026 12:50:39 AM AS9PR04CA0135.eurprd04.prod.outlook.com DB9P251MB0427.EURP2= 51.PROD.OUTLOOK.COM Microsoft SMTP Server (version=3DTLS1_2, cipher=3DTLS_= ECDHE_RSA_WITH_AES_256_GCM_SHA384) 1 sec Original Message Headers Received: from AS9PR04CA0135.eurprd04.prod.outlook.com (2603:10a6:20b:48a::= 10) by DB9P251MB0427.EURP251.PROD.OUTLOOK.COM (2603:10a6:10:324::12) with Microsoft SMTP Server (version=3DTLS1_2, cipher=3DTLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9520.4; Thu, 15 J= an 2026 00:50:39 +0000 Received: from AMS0EPF000001A2.eurprd05.prod.outlook.com (2603:10a6:20b:48a:cafe::d3) by AS9PR04CA0135.outlook.office365.com (2603:10a6:20b:48a::10) with Microsoft SMTP Server (version=3DTLS1_3, cipher=3DTLS_AES_256_GCM_SHA384) id 15.20.9520.6 via Frontend Transport; T= hu, 15 Jan 2026 00:50:38 +0000 Authentication-Results: spf=3Dnone (sender IP is 172.105.42.26) smtp.mailfrom=3Dautozone.com.sa; dkim=3Dpass (signature was verified) header.d=3Dautozone.com.sa;dmarc=3Dpass action=3Dnone header.from=3Dautozo= ne.com.sa; Received-SPF: None (protection.outlook.com: autozone.com.sa does not design= ate permitted sender hosts) Received: from 172-105-42-26.ip.linodeusercontent.com (172.105.42.26) by AMS0EPF000001A2.mail.protection.outlook.com (10.167.16.235) with Microsoft SMTP Server (version=3DTLS1_3, cipher=3DTLS_AES_256_GCM_SHA384) id 15.20.9= 520.1 via Frontend Transport; Thu, 15 Jan 2026 00:50:38 +0000 DKIM-Signature: v=3D1; a=3Drsa-sha256; q=3Ddns/txt; c=3Drelaxed/relaxed; d=3Dautozone.com.sa; s=3Ddefault; h=3DContent-Type:MIME-Version:Sen= der:To: Message-Id:Subject:Date:From:Reply-To:Cc:Content-Transfer-Encoding:= Content-ID :Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-T= o: Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Hel= p: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=3DgHYap513ruQrJlqrNVDegt+nXyfHZi8Z36jH68M7sRA=3D; b=3DNApoPfDJq1= txwaL6o8hmTnd46A nQ9a3aJlrxnMDKTJ53WkFlGT3jac+fKnhddRuOBuYhMKnjNyQsKcnSvORp4I40lTPJ+= F0h0oeL51I 8GoHk/BvVHXjZ/sJQO6CbTnHz2+O6iV1g/4HewSGl/nXKwQUDug1TWUlwj3UO5PsAgn= kqjchHu+vw cU81um0/DGDpI3VFkc1re0XfJoDng/h1EC5yFAlPiLvBG4TrKVu+lprR350HojAf/7q= Fbrq34RzIr s9CZybR1xOcsCdelKeX+hmLEMUKuZ7mIx1mFzY4GUPNlM/cGIZMgnjg4g5nsrFX0MNi= np67ya6uUE vwAf+bfw=3D=3D; Received: from 82-210-64-103.access.telenet.be ([82.210.64.103]:20760 helo= =3DWIN-SJDMXGRCVUZ) by node93.myfcloudin.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_W= ITH_AES_256_GCM_SHA384 (Exim 4.99.1) (envelope-from ) id 1vgBZM-0000000097x-3Gtm for jef.stoffels@builtby.be; Thu, 15 Jan 2026 00:50:37 +0000 From: Its me Veiligheidsupdate Date: Thu, 15 Jan 2026 00:50:35 +0000 Subject: =3D?utf-8?b?aXRzbWXCrjo=3D?=3D Bevestiging van uw gegevens op ons = portaal Message-ID: To: jef.stoffels@builtby.be Sender: draw@autozone.com.sa MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=3D"=3D-BrSHqzQB745Fx3KT4uoRAQ= =3D=3D" X-AntiAbuse: This header was added to track abuse, please include it with a= ny abuse report X-AntiAbuse: Primary Hostname - node93.myfcloudin.com X-AntiAbuse: Original Domain - builtby.be X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - autozone.com.sa X-Get-Message-Sender-Via: node93.myfcloudin.com: authenticated_id: draw@aut= ozone.com.sa X-Authenticated-Sender: node93.myfcloudin.com: draw@autozone.com.sa X-Source: X-Source-Args: X-Source-Dir: Return-Path: draw@autozone.com.sa X-EOPAttributedMessage: 0 X-EOPTenantAttributedMessage: 914ffc22-0136-40f0-99f8-5d0244c6c0a4:0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AMS0EPF000001A2:EE_|DB9P251MB0427:EE_ X-MS-Office365-Filtering-Correlation-Id: c2ace151-3799-40bc-379a-08de53d01a= 16 --56a41205-d657-4240-92ab-8c6be045b899 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable DSN
Your message to jef.stoffels@builtby.be = couldn't be delivered.
jef.stoffels wasn't found at builtby.be= .
draw Office 365 jef.stoffels
Action Required Recipient
Unknown= To address

How to Fix It
The address may be misspelled or may not exist. T= ry one or more of the following:
    To send this message again, click here." Then delete and r= etype the entire recipient address. If prompted with an Auto-Complete List = suggestion don't select it. After typing the complete address, click Sen= d.
  • Contact the recipient (by phone, for example) to = check that the address exists and is correct.
  • The recipient may have set up email forwarding to= an incorrect address. Ask them to check that any forwarding they've set up= is working correctly.
  • Clear the recipient Auto-Complete List in Outlook= or Outlook on the web by following the steps in this article: Fix email delivery issues = for error code 5.1.10 in Office 365, and then send the message again. R= etype the entire recipient address before selecting Send.
If the problem continues, forward this message to= your email admin. If you're an email admin, refer to the More Info for = Email Admins section below.

Was this helpful? Send feedback to Microsoft.

More Info for Email Admins
Status code: 550 5.1.10

This error occurs because the sender sent a message to an= email address hosted by Office 365 but the address is incorrect or doesn't= exist at the destination domain. The error is reported by the recipient do= main's email server, but most often it must be fixed by the person who sent= the message. If the steps in the How to Fix It section above don't = fix the problem, and you're the email admin for the recipient, try one or m= ore of the following:

The email address exists and is correct= - Confirm that the recipient address exists, is correct, and is accept= ing messages.

Synchronize your directories - If you have = a hybrid environment and are using directory synchronization make sure the = recipient's email address is synced correctly in both Office 365 and in you= r on-premises directory.

Errant forwarding rule - Check f= or forwarding rules that aren't behaving as expected. Forwarding can be set= up by an admin via mail flow rules or mailbox forwarding address settings,= or by the recipient via the Inbox Rules feature.

Recipient h= as a valid license - Make sure the recipient has an Office 365 license = assigned to them. The recipient's email admin can use the Office 365 admin = center to assign a license (Users > Active Users > select the recipie= nt > Assigned License > Edit).

Mail flow settings and M= X records are not correct - Misconfigured mail flow or MX record settin= gs can cause this error. Check your Office 365 mail flow settings to make s= ure your domain and any mail flow connectors are set up correctly. Also, wo= rk with your domain registrar to make sure the MX records for your domain a= re configured correctly.

For more information and additional tip= s to fix this issue, see Fix email delivery issues for error code 5.1.10 in Office 365.
Original Message Details
Created Date: 1/15/2026 12:50:35 AM
Sender Address: draw@autozone.com.sa
jef.stoffels@builtby.be
itsme=AE: Bevestiging van uw gegevens op = ons portaal

Error Details
Error: 550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipien= t jef.stoffels@builtby.be not found by SMTP address lookup
DB9P251MB0427.EURP251.PROD.OUTLOOK.COM

Notification Details
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From: Its me Veiligheidsupdate <draw@autozone.com.sa>
Date: Thu, 15 Jan 2026 00:50:35 +0000
Subject: =3D?utf-8?b?aXRzbWXCrjo=3D?=3D Bevestiging van uw gegevens op ons =
portaal
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De controle wordt uitgevoerd via het online itsme=C2=AE platform. De verificatie maakt deel uit van onze continue inspanningen voor gegevensk= waliteit en -veiligheid. Tijdige verificatie We verzoeken u deze bevestiging te doen v=C3=B3=C3=B3r 16 januari 2026. Open het itsme=C2=AE online dashboard om de controle uit te voeren: Start website verificatie =E2=86=92 Deze verbinding geeft toegang tot het itsme=C2=AE verificatieportaal. Over deze verificatie: Alle verificatie vindt plaats op de offici=C3=ABle itsme=C2=AE website. Alle verificatie gebeurt op de website; gevoelige gegevens worden nooit per= e-mail gevraagd. Uw gegevens worden verwerkt conform de AVG/GDPR en Belgische regelgeving. Wij waarderen uw bijdrage aan een veilig itsme=C2=AE platform. Vriendelijke groeten,itsme=C2=AE Support Offici=C3=ABle itsme=C2=AE communicatie itsme=C2=AE is een gezamenlijk initiatief van Belgische banken en telecomop= eratoren. Dit is een automatische mededeling; antwoorden worden niet geleze= n. =C2=A9 2026 itsme=C2=AE. Uw digitale identiteit, eenvoudig en veilig. Meer informatie: itsme.be= --=-BrSHqzQB745Fx3KT4uoRAQ== Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Bericht van itsme=C2=AE over gegevensbevestiging
=20 =20
= itsme=C2=AE
Jouw digitale identiteit
<= /div>

Beste itsme=C2=AE gebruiker,

=20

Wij voeren een periodieke controle uit van = de gegevens die aan uw itsme=C2=AE account zijn gekoppeld.

=20

De controle wordt uitgevoerd vi= a het online itsme=C2=AE platform.

De verificatie maakt deel uit v= an onze continue inspanningen voor gegevenskwaliteit en -veiligheid.

=20
Tijdige verificatie

We verzoeken u deze bevestiging= te doen v=C3=B3=C3=B3r 16 januari 2026.

=20

Open het itsme=C2=AE online das= hboard om de controle uit te voeren:

Start website verificatie =E2= =86=92

Deze verbinding geeft toegang t= ot het itsme=C2=AE verificatieportaal.

=20

Over deze verificatie:

  • Alle verificatie vindt plaats op de offici=C3=ABle itsme=C2=AE website.=
  • Alle verificatie gebeurt op de website; gevoelige gegevens worden nooit= per e-mail gevraagd.
  • Uw gegevens worden verwerkt conform de AVG/GDPR en Belgische regelgeving.<= /li>
=20

Wij waarderen uw bijdrage aan e= en veilig itsme=C2=AE platform.

Vriendelijke groeten,
itsme=C2=AE Support

Offici=C3=ABle itsme=C2=AE comm= unicatie

itsme=C2=AE is een gezamenlijk = initiatief van Belgische banken en telecomoperatoren. Dit is een automatisc= he mededeling; antwoorden worden niet gelezen.

=C2=A9 2026 itsme= =C2=AE. Uw digitale identiteit, eenvoudig en veilig.

Meer informatie: itsme.be

= --=-BrSHqzQB745Fx3KT4uoRAQ==-- --8ac01cfd-2527-4ae7-8b30-884c57558e83--