I have just migrated our company over to Zimbra. Everything seems to be behaving except for viewing mail via a mobile phone browser. I instantly get a "504: Gateway Timeout". When I view the details of this error, I get:
I have tried the connection externally to ensure that the firewall setup is correct.
The following error was encountered:
- Connection to <our ip> Failed
The system returned:
(111) Connection refused
The remote host or network may be down. Please try the request again.