Cannot Receive Verification Emails from Specific Website (Gmail Works)

General Email Routing
1

What is the name of the domain?

kimino.top

What is the error number?

There is no specific error number

What is the error message?

No error message is displayed.

What is the issue you’re encountering

I am not receiving verification emails from example.com to my mydomain.com email address when registering. However, I do receive the verification email when registering with a Gmail address.

What steps have you taken to resolve the issue?

Checked Cloudflare Firewall events log. No blocking events.
Verified MX records point to Cloudflare.
Contacted example.com administrator (no response yet).
Tested with a Gmail address (success).

What are the steps to reproduce the issue?

Go to example.com.
Attempt to register with an email address @mydomain.com.
Do not receive verification email.
Repeat steps 1 & 2 with a Gmail address.
Receive verification email instantly.

2

I am using AI translate for this appeal, sorry for potential misunderstanding.

3

For Email Routing, you will need to look at the “Activity Log” instead.

Can you share a screenshot of the “Activity Log”, with each item expanded?

→ https://dash.cloudflare.com/?to=/:account/:zone/email/routing/overview

4

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Sure, this is the screenshot of activity log.Only received my test mail.

5

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and this

6

Edit:
I’m using Cloudflare’s email routing feature, and the website that’s sending me emails also has Cloudflare enabled.

Additionally, after some investigation, I’ve received feedback suggesting that the issue might be due to a ‘mailbox not found’ error (possibly because I didn’t enable the forwarding switch in time). This could have caused Cloudflare to put me on a ‘low reputation list’. However, my own test emails are being forwarded and received successfully.