Hello thank you for reading, i have a problem that is turing into a reall pain

I am having problems receiving and sending offline instant messages (OIM's) I get the following message 'The following message could not be delivered to all recipients:' when i send messages to anyone offline and they do not recive them when they log on...this seems  to be isloated to me as they recivee offline messages from others...... and the most annoying thing is I dont get any offline messages that have been sent to me even if i am appearing offline or actualy offline from anyone.

i am using WLM 8.1 i have done deep cleans fresh installs gone up to 8.5 come back down again and reinstalled all with new downloads.. i have turned off my firewall and even uninstalled it and still nothing. and i have also checked the recive offline messages when you log on tab in obtions.windows have been working on it for 1 week with now joy...

there must be something missing or if someone knows about this prob