[NTLUG:Discuss] Please Help me interpret some Mail Log Entries...

[Newsletters]

Hello,

I'm running my own mailserver, and I keep getting these entries from my
mail log.
I don't think I'm running an open relay, but these entries make me a
little worried.
Do I have anything to worry about?  And what suggestions would you have
to help make
my sendmail more secure?

Thanks in advance,
--JCR
=============
Maillog Entries:

NOQUEUE: [213.69.69.202] did not issue MAIL/EXPN/VRFY/ETRN during
connection to MTA
e54Gj8921238: timeout waiting for input from [213.69.69.202] during
server cmd read
NOQUEUE: [213.69.69.202] did not issue MAIL/EXPN/VRFY/ETRN during
connection to MTA
e54GjF921239: timeout waiting for input from [213.69.69.202] during
server cmd read
NOQUEUE: [213.69.69.202] did not issue MAIL/EXPN/VRFY/ETRN during
connection to MTA
e54Gk0921243: timeout waiting for input from [213.69.69.202] during
server cmd read
NOQUEUE: [213.69.69.202] did not issue MAIL/EXPN/VRFY/ETRN during
connection to MTA
NOQUEUE: trend2-vw.tcs.tulane.edu [129.81.255.236] did not issue
MAIL/EXPN/VRFY/ETRN
~                                                    during connection
to MTA
NOQUEUE: trend2-vw.tcs.tulane.edu [129.81.255.236] did not issue
MAIL/EXPN/VRFY/ETRN
~                                                    during connection
to MTA
NOQUEUE: trend1-vw.tcs.tulane.edu [129.81.255.235] did not issue
MAIL/EXPN/VRFY/ETRN
~                                                    during connection
to MTA

==============
I'm running sendmail 8.11.6-15 which is the included sendmail on Red Hat
7.3...
which I use for my webserver.