New message from

So this is pretty random and I cannot work out how or why … so basically three of my wordpress sites have sent out emails that say

SUBJECT – New message from

42
– ( )

That’s it! I have checked any contact forms and they are all working fine and do not use that subject line – this site is so minimal that I know there are no other contact forms lying around etc

any ideas? As I said 3 sites did it

All sites are running ninja forms but none of the forms have these subject title – when looking at email headers I see that its maybe pointing to admin-ajax file?

X-PHP-Script: …./wp-admin/admin-ajax.php for 45.141.215.58
X-PHP-Filename: /…../wp-admin/admin-ajax.php REMOTE_ADDR: 45.141.215.58
Date: Wed, 10 May 2023 18:20:14 +0000
From: GLC2000 EU (the my email address)
Message-ID:
X-Mailer: PHPMailer 6.7 (https://github.com/PHPMailer/PHPMailer)
X-Ninja-Forms: ninja-forms
MIME-Version: 1.0
Content-Type: text/html; charset=UTF-8

Thank you

Sarah

The page I need help with: [log in to see the link]