We are running 2010 SP2 RU6. Multi-day meetings such as Monday, Wednesday and Friday show up as Sunday and Monday when sent to us by an outside Exchange environment. This cannot be replicated internally obviously. Time is correct and Time Zone settings on our DC's and Exchange are fine. Also I'd like to note we are using IronPorts with ESMTP as our smart hosts. Has anyone seen this before and have an answer? Thanks.