Sendmail Logs

[Stephane Lentz]

On Thu, Oct 24, 2002 at 06:02:17PM +0100, David While wrote:
> ....
>    Oct 24 09:47:14 yoda sendmail[26342]: NOQUEUE: [63.123.249.67] did not
>    issue MAIL/EXPN/VRFY/ETRN during connection to MTA
>    Oct 24 09:48:49 yoda sendmail[26380]: NOQUEUE:
>    1-1-242.customer.bct.cmailinc.com [130.94.244.242] did not issue
>    MAIL/EXPN/VRFY/ETRN during connection to MTA
>    Oct 24 09:56:35 yoda sendmail[26707]: NOQUEUE: [63.123.249.67] did not
>    issue MAIL/EXPN/VRFY/ETRN during connection to MTA
>
>    LogCheck 1.1.1 reports this as a possible security violation.  Should I
>    be concerned?
> .....

>    Usually caused by the sending MTA terminating the connection prematurely -
>    you sometimes see this when spammers connect to your machine but they are
>    blocked by RBLs or your access control list
>
It could also be some monitoring software (BB, Netsaint) that just connect to the
SMTP port and do some QUIT.

Regards,

SL/
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Stephane Lentz / Alcanet International - Internet Services