Why do i get this message when i send this mail ?

This is the mail system at host ****.

I'm sorry to have to inform you that your message could not

be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can

delete your own text from the attached returned message.

                  The mail system

<****@securitas.se>: host mgw10.securitas.se[193.164.80.139] said: 554

   5.7.1 Service unavailable; Client host [81.236.60.144] blocked using

   b.barracudacentral.org;

   http://www.barracudanetworks.com/reputation/?pr=1&ip=81.236.60.144 (in

   reply to RCPT TO command)

Reporting-MTA: dns; ts201-smtpout81.ddc.teliasonera.net

X-Postfix-Queue-ID: BE6E0406755

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

Arrival-Date: Sat, 17 Sep 2022 15:46:37 +0200 (CEST)

Final-Recipient: rfc822;****@securitas.se

Original-Recipient: rfc822;****@securitas.se

Action: failed

Status: 5.7.1

Remote-MTA: dns; mgw10.securitas.se

Diagnostic-Code: smtp; 554 5.7.1 Service unavailable; Client host

   [81.236.60.144] blocked using b.barracudacentral.org;

   http://www.barracudanetworks.com/reputation/?pr=1&ip=81.236.60.144

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

Received: from ts201-smtpout72.ddc.teliasonera.net (ts201-smtpout72.ddc.teliasonera.net [81.236.60.177])

by ts201-smtpout81.ddc.teliasonera.net (Postfix) with ESMTPS id BE6E0406755

for <****@securitas.se>; Sat, 17 Sep 2022 15:46:37 +0200 (CEST)

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telia.com; s=tssemail-202204; t=1663422398; 

       bh=uIA7Eq/L382R0v+i99wdCVHWvhMzUJFwK5tjxhChy3E=;

       h=From:Mime-Version:Subject:Date:References:To:In-Reply-To:Message-Id;

       b=PuL3p4wa18TR3xYInych9QptPTGp463UZjZeSSQUXQ5pIzt0cfiNq8c7jeyVQwuwV9ZqjpI+jkLPFlTXII0traqy56OBKrPaPo7LX5Lf0rrnDQGwl/RY85sy0y0VNHvH0gPuosMl3D7SN/jyLKRY+mgFhhRdhtJkGv+FKmKEb/Qc2/omsD/8G0JfIS9AhdS/RGNHHnRO8Bf9aEstYBRdOGUEU92fLZ42NzSVKnbXlaRTml1Pac824vj7rpZYldsNycnofKxYlufxiYrP/ZI0ubzkY+ItfYpHk04rNEXcRzUVUlhWjdSlvrwCmZNOfOXCAH+FxPrelMt47zvC/fSDqQ==

X-RG-Rigid: 626BF4580541046B

X-Originating-IP: [90.235.29.38]

X-RazorGate-Vade: gggruggvucftvghtrhhoucdtuddrgedvfedrfedvvddgjeduucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuvffgnffktefuhgdpggftfghnshhusghstghrihgsvgdpqfgfvfenuceurghilhhouhhtmecufedttdenucdnvehorghsthgrlhculdeftddtmdenucfjughrpefhtggguffffhfvjgfkofesrgdtmherhhdtjeenucfhrhhomhepffgrnhcutegtkhgvuceouehrhihnvghhohhlthesthgvlhhirgdrtghomheqnecuggftrfgrthhtvghrnheptefhgeejhffhkefgkeefieejvdefkedtteeiieegiedvgeetieejjeeuleefkefhnecukfhppeeltddrvdefhedrvdelrdefkeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhephhgvlhhopehsmhhtphgtlhhivghnthdrrghpphhlvgdpihhnvghtpeeltddrvdefhedrvdelrdefkedpmhgrihhlfhhrohhmpehuiedtieduuddvkedvsehpnhgvrdhtvghlihgrrdgtohhmpdhnsggprhgtphhtthhopedupdhrtghpthhtoheplhgrrhhmshhuphhpohhrthesshgvtghurhhithgrshdrshgv

X-RazorGate-Vade-Verdict: spam 300

X-RazorGate-Vade-Classification: spam

Received: from smtpclient.apple (90.235.29.38) by ts201-smtpout72.ddc.teliasonera.net (5.8.716) (authenticated as ****@telia.com)

       id 626BF4580541046B for****@securitas.se; Sat, 17 Sep 2022 15:46:37 +0200

From: Dan Acke <****@telia.com>

Content-Type: multipart/alternative;

boundary="Apple-Mail=_32E997F6-E316-4091-B619-22B08F2C919B"

Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\))

Subject: Re: Magnetkontakt

Date: Sat, 17 Sep 2022 15:46:25 +0200

References: <DB6PR1001MB1208C70935434432AB9F76B399499@DB6PR1001MB1208.EURPRD10.PROD.OUTLOOK.COM>

To:****@securitas.se

In-Reply-To: <DB6PR1001MB1208C70935434432AB9F76B399499@DB6PR1001MB1208.EURPRD10.PROD.OUTLOOK.COM>

Message-Id: <4AFD4D7F-31F0-47BC-921B-379BADFB018D@telia.com>

X-Mailer: Apple Mail (2.3654.120.0.1.13)

[Personal Information Edited by Moderator]