What is zoho?

[#1]

I've had someoen report several bounced emails to my address. I've checked and it is correct. I've mailed them and they are unable to send a reply as they get a spam message.
The mail isn't in the webmail inbox or the spam
It's not in my spam/junk folder
The screen shot of teh error stated it was rejected by mailer-daemon@mail.zoho.com

Is zoho now running plusnet mail?

[#2]

It's likely that that the person trying to mail yous account has been suspected of spam. Therefore we've rejected the mail and his provider have emailed him to tell him. Zoho isn't anything to do with us I'm afraid.

If you'd like us to look into exactly why the message was rejected, please PM me the senders email address, your email address and the date and time. 

Sorry for the inconvenience.

[#3]

Thanks Jono, this is the mail:

============ Forwarded message ============
From: <mailer-daemon@mail.zoho.com>
To: <info@lakelandretreats.com>
Date: Tue, 11 Jan 2022 16:44:22 +0000
Subject: Undelivered Mail Returned to Sender
============ Forwarded message ============

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.

iain@lakesvet.plus.com, ERROR CODE :552 - Spam Message Rejected



Reporting-MTA: dns; mx.zohomail.com
Arrival-Date: Tue, 11 Jan 2022 16:44:11 +0000

Original-Recipient: rfc822; iain@lakesvet.plus.com
Final-Recipient: rfc822; iain@lakesvet.plus.com
Status: 552
Action: failed
Last-Attempt-Date: 11 Jan 2022 16:44:22 GMT
Diagnostic-Code: Spam Message Rejected


Received:from mail.zoho.com by mx.zohomail.com
    with SMTP id 1641919451674245.63083585661002; Tue, 11 Jan 2022 08:44:11 -0800 (PST)
Message-ID:<17e4a0691f1.aec14e1f299456.6620015728685678339@lakelandretreats.com>
Date:Tue, 11 Jan 2022 16:44:11 +0000
From:Lakeland Retreats <info@lakelandretreats.com>
To:"iain" <iain@lakesvet.plus.com>
Subject:Potential Booking Bridge House Cottage 24th June - 1st July
Content-Type:multipart/alternative;
    boundary="----=_Part_967140_1176954632.1641919451634"
User-Agent:Zoho Mail

Lakeland Retreats

The team

Ambleside Office: 01539 434 011 | Knott Street, Ambleside, Cumbria, LA22 0EB Windermere Office: 01539 445 989 | 52A Main Road, Windermere, Cumbria, LA23 1DX Facebook | Instagram | Vimeo | YouTube Lakeland Retreats is a family run business based in the heart of Ambleside. We provide holiday makers with a choice of hand-picked self-catering properties from which to enjoy the beautiful Lake District.

[#4]

I've also had another one rejected. It was sent to my gmail and I sent it from there. I did an experiment and removed the footnote advert and it sent OK.

While I'm on, I reported a comment a while ago relating to "too many rcpts" I had it again today - one recipient. It eventually got sent.

[#5]

On some email systems If the footnote is a graphic there has to be a certain amount of text else it's rejected.