Yes that Auto deny setting is turned on.
I finally found the possible hack attempt message in the logs (the
previous day).
Is there a limit on the max SMTP connections from 1 IP address that
IMAIL will accept? Looks like it might be 12.
Goran Jovanovic
The LAN Shoppe
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:IMail_Forum-
> [EMAIL PROTECTED] On Behalf Of Eric Shanbrom [Ipswitch]
> Sent: Thursday, July 22, 2004 10:57 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [IMail Forum] Odd SMTP Connect Problem
>
> I would be willing to bet that the "Auto deny hack attempts" is
kicking in
> here. This will temporarily add their IP address to the access control
> list
> to be denied until the SMTP service is restarted...Check the logs and
you
> will see this in there if this is what's happening
>
> Eric S
>
> ----- Original Message -----
> From: "Goran Jovanovic" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, July 22, 2004 10:47 AM
> Subject: RE: [IMail Forum] Odd SMTP Connect Problem
>
>
> Yes that is what it looks like. But how/where is IMail blacklisting
it?
>
> Can I change the settings somewhere?
>
> Goran Jovanovic
> The LAN Shoppe
>
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:IMail_Forum-
> > [EMAIL PROTECTED] On Behalf Of Travis Rabe
> > Sent: Thursday, July 22, 2004 10:45 AM
> > To: [EMAIL PROTECTED]
> > Subject: RE: [IMail Forum] Odd SMTP Connect Problem
> >
> > Sounds like Imail is temporarily blacklisting it. The only way to
> stop
> > that
> > is to restart the SMTP service. You may want to look at the logs on
> that
> > machine to see what is going on.
> >
> > Travis
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] Behalf Of Goran
> Jovanovic
> > Sent: Thursday, July 22, 2004 7:38 AM
> > To: [EMAIL PROTECTED]
> > Subject: [IMail Forum] Odd SMTP Connect Problem
> >
> > OK this is very weird.
> >
> > I am running IMail 8.10 and am seeing the following. There is a
> > secondary MX record for one of the domains that I service. Someone
> seems
> > to be sending to it directly and so it sends me a lot of mail for
this
> > domain (this is not a problem in my mind). The problem is that the
> SMTP
> > service stops accepting mail from this (and only this IP address) at
> > random times. It can work for hours and then fail and the next time
I
> > restart the service it will work for minutes, completely
> unpredictable.
> >
> > I have done a packet trace at my end and I see:
> >
> > Them sending a SYN
> > I send and ACK
> > They send an ACK
> > Then I send a FIN
> >
> > So we never get to the banner being sent out or the helo coming in.
> > There is nothing in the log even with debug and verbose turned on.
> >
> > >From that point on SMTP will not accept a connection from that IP
> > address. But, it gets better, all other IPs can connect to the SMTP
> > server and still get their mail through. If the other ISP uses
another
> > machine in the same IP block that machine can connect no problem.
> >
> > I have increased the SMTP setting for Delay between recipients to
500
> > milliseconds but this seems to have no effect.
> >
> > This is a dedicated machine to IMail.
> >
> > Does anyone have any ideas on what this might be and how to fix it?
> >
> > Goran Jovanovic
> > The LAN Shoppe
> >
> >
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> >
> >
> >
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>
>
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