email problem - SPF and DKIM records

One of our admins reported a problem with replying to mails - they use Zoho - and copy-pasted Claude's solution - 

1. Modify the SPF record to include the zoho domain also - 

- Current value: v=spf1 include:zeptomail.net ~all

- New value: v=spf1 include:zoho.com include:zeptomail.net ~all

2. Publish the DKIM key. In Zoho Mail Admin Console > Domains > ourdomain.in > Email Configuration > DKIM > add selector. Zoho shows you a long key, which is to be added as a DNS TXT record.

The first time we did it, the DKIM record was sent to me by WhatsApp, and perhaps there was some non-printing character or line-break in the middle of the key, because of which the validator tool at https://mxtoolbox.com/SuperTool.aspx complained of invalid syntax for the DKIM key. Then I was sent the record by email as requested, and this time, copy-pasting it into Cloudflare's dashboard worked fine and the validator passed it. Currently no DMARC records are added, we can add those later if need be. And the problem seems to be solved.