Email not received. Sender logs show zoho servers detected as SPAM

Email not received. Sender logs show zoho servers detected as SPAM

Hi 
I was waiting for an email and the email goes via a reputable 3rd party email masking service dnt.abine.com. Most of my emails come this way.
I notice from dnt.abine.com that time to time some emails never get received in my Zoho account but 99% of them do, and I can only now assume that the reason for this is down to the reason below - i.e. your servers label it as SPAM but then do nothing about it.

See yy recent email from an insurance company to me via was bounced by zoho.com...see error log below:
  1. badrcpt TIME=[Sat, 09 Sep 2017 22:03:20 -0700] FR=[FWD-737Q5Y3MGNAWYAIADMSHQIBGEFUC4MZIAWJEJYAW4AQ2ASZZJAWDCOJGEMWCE4BCM7ABTIAOEFWIYIUIAAQAAIA=@opayq.com] TO=[rare_uk@zoho.com] ER=[554 5.7.1 email cannot be delivered. reason: email detected as spam by spam filters.]
and: 

  1. 2017-09-11 02:15:49 [9345] 1drKon-0002Qj-4X LINKURL - [https://dnt.abine.com/#help/faq/faq-whataremaskedemails] - X=opayq-outbound H=smtp5.opayq.com [107.22.209.6]:5682 HELO=[[107.22.209.6]] SN=[FWD-737QFY3MJVAWYB3BAPICHIJOERMCS3FIBUAABIKG5RSU4EGEEBKUATQAJQATQAWQAOAATZZAQYAIMIBAAAQA====@opayq.com] T=[rare_uk@zoho.com] S=[The Co-operative Insurance Purchase]
  2. 2017-09-11 02:15:49 [9345] 1drKon-0002Qj-4X OUTSCANWHITE white-hard - nofilt X=opayq-outbound H=smtp5.opayq.com [107.22.209.6]:5682 HELO=[[107.22.209.6]] SN=[FWD-737QFY3MJVAWYB3BAPICHIJOERMCS3FIBUAABIKG5RSU4EGEEBKUATQAJQATQAWQAOAATZZAQYAIMIBAAAQA====@opayq.com] T=[rare_uk@zoho.com] S=[The Co-operative Insurance Purchase]
  3. 2017-09-11 02:15:49 [9345] 1drKon-0002Qj-4X <= FWD-737QFY3MJVAWYB3BAPICHIJOERMCS3FIBUAABIKG5RSU4EGEEBKUATQAJQATQAWQAOAATZZAQYAIMIBAAAQA====@opayq.com H=smtp5.opayq.com [107.22.209.6]:5682 I=[184.105.182.150]:587 P=esmtps X=TLSv1.2:AES256-SHA256:256 CV=no S=7463 M8S=0 id=fff29d$5na33u@mxe6.ssp-hosting.net T="The Co-operative Insurance Purchase" from <FWD-737QFY3MJVAWYB3BAPICHIJOERMCS3FIBUAABIKG5RSU4EGEEBKUATQAJQATQAWQAOAATZZAQYAIMIBAAAQA====@opayq.com> for rare_uk@zoho.com
  4. 2017-09-11 02:15:49 [9407] 1drKon-0002Qj-4X ** rare_uk@zoho.com F=<FWD-737QFY3MJVAWYB3BAPICHIJOERMCS3FIBUAABIKG5RSU4EGEEBKUATQAJQATQAWQAOAATZZAQYAIMIBAAAQA====@opayq.com> P=<FWD-737QFY3MJVAWYB3BAPICHIJOERMCS3FIBUAABIKG5RSU4EGEEBKUATQAJQATQAWQAOAATZZAQYAIMIBAAAQA====@opayq.com> R=process_and_forward_outscan T=outscan_smtp H=smtpin.zoho.com [8.40.222.120]:25 I=[184.105.182.138]:33503 X=TLSv1.2:AES128-SHA:128 CV=yes DN="/CN=*.zoho.com": SMTP error from remote mail server after RCPT TO:<rare_uk@zoho.com>: 554 5.7.1 Email cannot be delivered. Reason: Email detected as Spam by spam filters.

Is there a reason this particular email was marked as SPAM but did not show in my SPAM folder at all. As I said previously this has happened to random emails I am waiting on - usually the important ones  , with the same outcome i.e. does not show up in Inbox or SPAM folder.

Thanks
J