Split from this unrelated thread.

I have the same L.ve Mail build16.43528.0331 as CarlaBrunskill  . Dec. 30th, 2017 my Live account which had been working perfectly, suddenly stopped sending mail and gives the same screen message (see screen shot below) every time I open it.  Outgoing letters sit in the outbox and do not send.  I complained to Microsoft website.  I am receiving letters now, but still have to copy and paste an email into the Windows 10 Mail program (which I do not like) to send an email.