I try to explain better my situation.
Last weekend I migrated all the mailbox from Exchange 2010 to Exchange 2013.
The migration was succesfull but today I found some minor problems.
One problem is that if I forward a message, this message have not the header from original sender and also the sender is not me but the external account xy that have send the original message.
What a strange behavior! All my client have this problem (I thinked only Outlook 2010 and instead Outlook 2013 too). See the image attached (Cristian is the user that forwarding e-mail from g...@bluewin.ch) . What can I do? Before migrating mailbox to new Exchange, this did not happen.
Another problem is that the new e-mail received don't appear in bold (to read) but they are as if it had already been read.
Boh! Any idea?