[Solve] Cloudflare MX record - SMTP Mail Server Connection Timeout

Situation:

- You enable Cloudflare on your domain

- You cannot send email out from your domain.  Error: (Connection) timeout.

- You are sure that the server is running OK.

Problems:

- In Cloudflare DNS, there is an "A" record with name = "mail", the proxy status is set to "Proxied"

Solution:

Please check the following:

- In Cloudflare DNS, there is a "MX" record, make sure name is "@" (or called root), and "content" is your mail server domain name.

In Cloudflare, it will convert your @ to <your_domain>.com automatically.  And your "content" would be something like mail.abcde.com.

Proxy status needs to be "DNS Only"

- There should be another "A" record, "name" is "mail", make sure your Proxy status is set to "DNS Only", not "Proxied".

Update and test again.  It should work.

--

Hope it helps someone.

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