If you want to send mass mailling , you will need many of SMTP
server,so this software will help you!
Speed Smtp Scaner can speed search the SMTP server.It can use
hundreds of threads/connections to search,The more connections, the
more ip addresses will be verified at the same time. When you put 100
connections, it is the same thing as 100 computers searching ip
addresses. http://www.efunsoft.com/download/speedsmtpscaner.exe
