Loading the status
This page reads the status from api.mxgate.io. The state comes from a monitor on another machine that checks the server every 2 minutes. Same data as JSON: api.mxgate.io/status.
What is checked
A second machine, in another data centre, checks the mxgate server every 2 minutes. No message is sent. A check is shown as failed after two failed runs in a row, so one lost packet changes nothing.
mail in: port 25 takes mail for a real alias and refuses to relay for a stranger. mail in TLS and send-as: ports 25, 587 and 465 show a valid certificate with 14 or more days left, and 587 and 465 offer a login. API: api.mxgate.io answers over HTTPS.
When mxgate is down
mxgate runs on one server. When it is down, sending servers keep the mail and try again, usually for some days. Mail that was accepted before stays in the queue and goes out when the server is up.
This page is served by Vercel, and its numbers come from the mxgate server. If the server is down, the page loads and says that the API does not answer. The same numbers are JSON at api.mxgate.io/status. Questions: hello@mxgate.io.