# 522 responses

Cloudflare answers with 522 for requests timeouts (opens new window). This problem can happen to pages when a tenant has configured their DNS to point to Fastly as expected.

# Url with port

Fastly does not allow connections using a port directly in the URL. Any page that uses a port in its URL won't work after activating MarfeelCDN, and should be moved.

Marfeel recommends changing that URL to a subdomain, for example:

example.com:8443

To become

cms.example.com