Re: sendmail

[Adam Tauno Williams <awilliam@xxxxxxxxxxxxx>]

>In the logifle of sendmail there are many NOQUEUE: Null connection from ...

What usually follows the NOQUEUE?

>Accoording to sendmail.org this is not something to worry about if it doesn't happen too much.
>In the other case someone is "playing around" or there is a network problem.

You can cause this by telneting to port 25 on the mail server and then bailing out.

>I find every few minutes quite enough, but the errors occur from many different sites. Many
>mail is comming thrue though.
>Accoording to other information should it mean that the side connecting did not issue a HELLO
> command to identify itself. Do I need to open port 113 (Auth/Ident) or is it
>something that just MS-bugware is issueing ? If I need to open port 113 does it mean that the
>localnet could be probed ??

It can be port probers, system monitoring applications such as Big Brother,  Lotus Notes does this to verify the other side is live,  dorks with telnet, etc...  But it shouldn't happen to ofthen.  DO you have any error statistics for that interface?