EFW 2.51 - Skype not working for pictures inside

[Guest]

[jr3151006]

Hi,

after enable explicit proxy to users, they realize to be unable to see or send pictures from the chat window.

At Firewall rules I have this allowed:
##################
23.99.220.0/20
23.96.89.0/20
96.6.221.0/20
104.45.141.0/20
137.116.33.0/20
157.56.109.0/20
168.61.160.0/20

At Proxy rules I have this allowed:
######################
.officeimg.vo.msecnd.net
.office.microsoft.com
.officeapps.live.com
.odc.officeapps.live
.microsoft.com
.productactivation.one.microsoft.com
.microsoft.com.br
.skype.net
.skype.com
.skypeassets.com
.apps.skype.com
.asm.skype.com
.static.skypeassets.com
.skypewebexperience.live.com
.ui.skype.com
.config.skype.com
.adnxs.com
.ib.adnxs.com
.alephd.com


There is some advice?