[cobalt-users] Sendmail NOQUEUE Errors! Help!

["Paul Sherrard" <psherrard@xxxxxxxxxxxx>]

I am getting an unusually large amount of NOQUEUE entries in the maillog on
one of my RaQ3i's, and am having people complaining that they are unable to
receive mail  (the sender gets an error message)..

Sendmail's website says the following about NOQUEUE:

NOQUEUE: Null connection from host.domain [IP.AD.DD.RESS]
in the logfile means that host.domain connected to your MTA but didn't issue
any commands. Unless this happens very often, you can ignore this. If it
happens very often, it's either someone playing around or it's a network
problem.

It didn't seem to be a network problem yesterday, as only a few hosts were
getting the NOQUEUE errors (mostly from France).  Today I see a ton of
NOQUEUE's, including one every 15 minutes from localhost..

I also get the following error, in conjunction with the localhost NOQUEUE
errors:

Sep 13 10:30:04 r1g1s1 imapd[22966]: command stream end of file, while
reading line user=Active_Monitor_69 host=localhost [127.0.0.1]
Sep 13 10:30:04 r1g1s1 sendmail[22971]: NOQUEUE: Null connection from
localhost
[127.0.0.1]

Anyone have any idea what's causing this, and what I can to do correct it?

"Only those who attempt the absurd will achieve the impossible."

Paul Sherrard
Future Media Network
Tokyo, Japan
tel. +81-3-5469-8911
fax. +81-3-5469-8910