no_connect: could not connect to the mail server

unknown reason: no_connect

EEV could not open a connection to the domain's mail server. No credit is used.

What it means

The domain has a mail server, but the connection to it could not be opened, so the mailbox was never checked.

Like every unknown result, no_connect does not use a credit.

Why it happens

• The mail server is offline or refusing connections at the moment.
• A firewall that blocks connections from verification services.

What to do

• Verify the address again later.
• If many addresses of the same domain return no_connect, the domain is likely blocking verification; decide by your own risk policy instead of retrying.

Example API response

{
    "email": "jane.doe@example.com",
    "result": "unknown",
    "reason": "no_connect",
    "disposable": false,
    "accept_all": false,
    "role": false,
    "free": false,
    "user": "jane.doe",
    "domain": "example.com",
    "mx_record": "mx1.example.com",
    "mx_domain": "example.com",
    "safe_to_send": false,
    "did_you_mean": "",
    "success": true,
    "message": "Processing time: 812 ms",
    "http_code": "200"
}

Try it without an account: the API has a free sandbox key, eev_sandbox_key, that returns fixed answers for test addresses such as valid@, invalid@, unknown@ and catchall@sandbox.easyemailverification.com.

Check an address for freeClean a whole list