Hi I am trying to send an email to a contact at NHS, but i receive the delivery failure below;

Can you remove the block from the trend micro? (I have replaced the recipient name with 'example'

*********************************************************************************************************

This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error.

example@nhs.net, ERROR CODE :554 - 5.7.1 <example@nhs.net>: Recipient address rejected: ERS-QIL.



Reporting-MTA: dns; mx.zohomail.com
Arrival-Date: Wed, 29 Nov 2023 10:10:27 +0000

Original-Recipient: rfc822; example@nhs.net
Final-Recipient: rfc822; example@nhs.net
Status: 554
Action: failed
Last-Attempt-Date: 29 Nov 2023 10:10:32 GMT
Diagnostic-Code: 5.7.1 <example@nhs.net>: Recipient address rejected: ERS-QIL.
Remote-MTA: dns; prefilter.emailsecurity.trendmicro.eu


Received:from mail.zoho.com by mx.zohomail.com
    with SMTP id 1701252628148878.2211395140481; Wed, 29 Nov 2023 02:10:28 -0800 (PST)
Message-ID:<18c1a8efbf1.f4370213432459.5354825986284843562@example.co.uk>
Date:Wed, 29 Nov 2023 10:10:27 +0000
From:"example" <example>
To:"example (BIRMINGHAM WOMEN'S AND CHILDREN'S NHS FOUNDATION TRUST)"
<example@nhs.net>
Subject:Re: Our Christmas Party
Content-Type:multipart/alternative;
    boundary="----=_Part_1362489_1918236323.1701252627446"
User-Agent:Zoho Mail