From: "Geo." 

"Mike N."  wrote in message
news:bh9e33t60qjfl97qocrqh8jtopb4qhi8sh{at}4ax.com...

>    It might be a bot that only understands Sendmail logs.  They don't know
> how to interpret the log to understand that the connection dropped.   They
> are looking for 451 and 421 error messages, and that's all they know.

What error message would sendmail give to a dropped connection? Don't the
4xx errors come from the receiving server, that server is not generating an
error, it's just dropping the connection rather rudely if you ask me.

Geo.

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