Not able to send any emails from Yesterday. Getting error as "smtp starttls command failed"

Is this a Microsoft account? ie @outlook, @hotmail, @live

its em client to gmail

This seems to be a software error - assume that a patch is coming?

Hello,
could you please copy the content of the LOG tab when this error pops up?
What version of eM Client are you running? (Help>About)

Regards,
Olivia