I keep seeing: Sep 11 06:18:26 pluto.example.com sendmail[2665]: NOQUEUE: pluto.example.com [10.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA in my sendmail log. What is this?

New versions of sendmail log every connection that does not issue valid mail transfer commands. The author recommends that you ignore the message. If you to issue a valid MAIL command, you would still get entries in your log file (but different messages).

If the message really bothers you, and you don't mind breaking the protocol, the author has noticed that sendmail does not log syntax errors: Service TCP/SMTP { send: MAIL\r\n } silly, silly, sendmail developers... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.