Hi,


03.06.2016 18:57 - Frank Thommen schrieb:
> our OTRS instance (5.0.9 on CentOS 6) has a proxy configured in
> SysConfig Core::Package::Proxy
> In the OTRS System Log I can see:
> 
> Fri Jun 3 18:31:23 2016  error  OTRS-CGI-47  Can't perform POST on
> https://cloud.otrs.com/otrs/public.pl: 500 Can't connect to
> cloud.otrs.com:443 (Connection refused)

mostly it is a missing shlash '/' at the end of your proxy configuration.

wrong:   user@http://proxy:port
correct: user@http://proxy:port/

You can try to start the Cloud Checker
/opt/otrs/bin/otrs.Console.pl Maint::CloudServices::ConnectionCheck

This gives some more detailed information.

Best regards,
Florian