I can’t foward emails I received to friends!!!

Hi Hotmail Team!  I cannot foward emails that I received to other contacts.  They all came back with a messege from the Mail Administrator saying "mail system error-returned mail" What is going on?  Is this because I deleted over 12,000 messages that were cluttering my inbox last night and then had to delete them from my delete box today?  In between, I had Norton Easy Support help me with my computer because it went down last night and wouldn't start.  But that had nothing to do with any emails.