incorrect processing of gmx.de server response

[UstyuzhaninAV]

Email to check

[email protected]

From where did you run check-if-email-exists?

selfhosted serevers

Version of check-if-email-exists (if running it yourself)

latest docker version

What happened?

There is a problem in gmx.de server response processing, for boxes with quota exceeded the response is marked as error with unknown status.
It should respond that the mailbox is full and the status is risky.

Like that

"has_full_inbox": true
"is_reachable": "risky"

Relevant log output

"mx": {
    "accepts_mail": true,
    "records": [
      "mx00.emig.gmx.net.",
      "mx01.emig.gmx.net."
    ]
  },
  "smtp": {
    "error": {
      "type": "SmtpError",
      "message": "permanent: Requested mail action aborted: exceeded storage allocation"
    }
  }

[UstyuzhaninAV]

#1465