Что за сообщение от панели управления хостингом Direct Admin: "Error during automated certificate renewal for skisport.wecan.by"?

Причем таких писем очень много и в конце каждого идет адрес домена, к которым я не имею отношения.

Пример письма:

Requesting new certificate order 1...
new-order error: HTTP/1.1 100 Continue
Expires: Sun, 08 Sep 2019 00:39:26 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache

HTTP/1.1 429 Too Many Requests
Server: nginx
Content-Type: application/problem+json
Content-Length: 203
Boulder-Requester: 37530045
Link: <https://acme-v02.api.letsencrypt.org/directory>;rel="index"
Replay-Nonce: 0001AAIY44nxYlIFhZTvDMghOx5348z1mZWC5EL-b0Sm3xc
Expires: Sun, 08 Sep 2019 00:39:27 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Sun, 08 Sep 2019 00:39:27 GMT
Connection: close

{
 "type": "urn:ietf:params:acme:error:rateLimited",
 "detail": "Error creating new order :: too many currently pending authorizations: see https://letsencrypt.org/docs/rate-limits/",
 "status": 429
}. Exiting...
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