Update Manager Failure

if i let the update manager "check" after some time it tells the following failure:

http://pastebin.com/kWqaJvmK

sry it is too long to use it here in forum.

edit:
oh again its some stuff with firewall from OMV...

its some with omv firewall. if i do not reject "all" except my allowings it works...
should know, which rules i have to add/use