Re: [Exim] smtp_accept_max -- too many connections

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Autor: Marilyn Davis
Data:  
Para: exim-users
CC: eVote-workers, evan
Assunto: Re: [Exim] smtp_accept_max -- too many connections
Thank you Philip.

Everything is fine again. If it happens again, we'll worry.

Marilyn

On Mon, 18 Mar 2002, Philip Hazel wrote:

> On Sun, 17 Mar 2002, Marilyn Davis wrote:
>
> > 2002-03-17 06:23:04 Connection from 203.207.226.79 refused: too many
> > connections
>
> > We just took on a new vote-by-mail responsibility so there could be a
> > new attack on us. There's not much traffic with us or with this
> > responsibility, but it is a very important demonstration of the
> > feasibility of voting by mail. So it is odd that it happens now.
>
> It could be an attack, I suppose. Somebody just floods your SMTP
> connections, and waits for timeouts. You could try reducing the value of
> smtp_receive_timeout from its default of 5 minutes.
>
> Hmm. I suppose a very evil person could just sit there and issue a NOOP
> command every 4m30s or so. Maybe smtp_accept_max_per_host would help.
>
> --
> Philip Hazel            University of Cambridge Computing Service,
> ph10@???      Cambridge, England. Phone: +44 1223 334714.

>
>