Unavailable to to login, receive new mail etc etc

Have never seen this error "cydthekid@verizon.net the authentication failed due to the following reason “unexpected end of stream” smtp attempt to connect to cydthekid@verizon.net failed. this could be caused by temp server unavailablity or incorrect settings  do you want to check settings?s

Hi Cyndi,
could you copy the Log from third tab in the Tools>Settings>Operations window when this error pops up again?
It will contain more information about the cause of this issue.