Sending Email error in Python

Question

File "C:\Python27\lib\smtplib.py", line 368, in getreply

raise SMTPServerDisconnected("Connection unexpectedly closed")

SMTPServerDisconnected: Connection unexpectedly closed

 

I am geting above error while sending mutiple mail using pythen query..

i am geting this error after 3 mail continously send then this error reflect