I’ve followed the Troubleshooting Email Delivery Issues when using Cloudflare tutorial, and am able to send email from my G-Mail account, through my email server. I’m pretty sure that the A and MX records are correct. The issue is with recieving email, which generates the following error message:
550 Please turn on SMTP Authentication in your mail client. redactedgmail.google.com [Redacted IP]:Redacted Port is not permitted to relay through this server without authentication.
My (limited) understanding is that SMTP Authentication is turned on, because I’ve checked “Always use a secure connection (SSL) when retrieving mail” in Gmail, and I’m using the secure settings listed in cPanel. I’m also not able to get messages if I go through the cPanel email client, so I’m not really sure where the issue is.
Any help would be appreciated, thanks!