Many of my e-mails are delayed arriving to my outlook.com inbox.  I know this for two reasons 1) I can send an email from another account to my outlook.com account and it will not show up to my outlook.com inbox until 4am or so (even if it is the afternoon when I send it) and 2) I have some e-mail automatically forwarded from another account and I can see the messages in my other account hours before they arrive on outlook.com (I have checked the server log and they are forwarding right away, so it isn't a problem with my forwarding server). 

Does anyone know what could be wrong? 

Thanks!