CedarFrost Mail discovery
IMAP/SMTP/POP: fusion.mxrouting.net
Webmail: https://fusion.mxrouting.net
Host: origin.cedarfrost.com  service=-  domain=-

Customer DNS (SaaS on cedarfrost.com):
  autoconfig.<domain>    CNAME  auto.cedarfrost.com
  autodiscover.<domain>  CNAME  auto.cedarfrost.com

Paths:
  GET  /mail/config-v1.1.xml
  POST /autodiscover/autodiscover.xml
  GET  /health