I have an error sending emails to @gmail, I have a domain dentalis.com.br managed by Cloudflare and an email provider managed by locaweb.
All my e-mails work normally with the exception of @gmail, I can receive from the outside in, but e-mails sent from my domain/provider to @gmail generate an error.
Follows error message
Hello, this is the mail server on hm1831-n-113.locaweb.com.br.
I am sending you this message to inform you on the delivery status of a message you previously sent. Immediately below you will find a list of the affected recipients; also attached is a Delivery Status Notification
(DSN) report in standard format, as well as the headers of the original message.
<[email protected]> delivery failed; will not continue trying
Received-From-MTA: dns;mcbain0021.email.locaweb.com.br (22.214.171.124)
Arrival-Date: Tue, 6 Dec 2022 15:54:35 -0300