So, I posted this in one suggested place, and I'm sending it again.  

I will send an email, and it will go through, I will send another one, and i will get 

i get Invalid MIME content Error Code -19789 

There is no HTML on the email, there's nothing attached.  even sent in regular text won't send.  

No one apparently knows what that code means... 

I've now have my emails outlook.com set up as an exchange email as well as IMAP, so when I send an email, if it won't be send via the exchange email, I can change it to the IMAP.... just have to keep looking in both folders for replies.  

annoying.