SSL ISSUE from Cloudflare

I receive this email 3-4 time per day ! how can i fix this ?

Hello,

Cloudflare has observed issuance of the following certificate for [mydomain.com] or one of its subdomains:

Log date: 2022-06-12 14:16:16 UTC
Issuer: CN=R3,O=Let’s Encrypt,C=US
Validity: 2022-06-12 13:16:16 UTC - 2022-09-10 13:16:15 UTC
DNS Names: mail.mydomain.com

Most certificates are trustworthy. However, if the data above is surprising to you or incorrect, please visit https://support.cloudflare.com/hc/articles/360031379012.

This email was requested by one of your Cloudflare account administrators. If you would no longer like to receive it, please disable it under “Certificate Transparency Monitoring” at https://dash.cloudflare.com/?to=/:account/:zone/ssl-tls/edge-certificates#ct-alerting-card.

Thanks,
The Cloudflare Team