On Wed, Jan 25, 2017 at 11:07:50AM +0200, Mark Elkins wrote:
> I think the other thing to consider is setting "smtp_accept_max = 10"
> means you can only process up to 10 e-mails at one time. If you are
> doing a number of checks, Virus, multiple blacklist checks - these tests
> can take a while - possible a meaningful amount of seconds each. Just
> bear that in mind. You probably want to increase"smtp_accept_max" quite
> a bit. I've also changed my "log selector":
>
> log_selector = +subject +incoming_interface +incoming_port +smtp_connection
>
> (sits in the same config area as "smtp_accept_max = 10")
>
> Now, when tailing the exim_main.log log file, you can see what the
> "Connection Count" number is. I think you'll find this useful.
>
> 2017-01-25 11:04:50 SMTP connection from [S.S.S.S]:1188 I=[D.D.D.D]:25
> (TCP/IP connection count = 3)
>
>
> On 24/01/2017 20:33, The Doctor wrote:
> > On Tue, Jan 24, 2017 at 12:34:23PM -0500, Chris Siebenmann wrote:
> >>> I cannot find the culprit doing this.
> >>>
> >>> Using Exim 4.88 on FreeBSD 11 I placed this into my configuration:
> >> [...]
> >>> smtp_accept_max = 10
> >> Well, you have a limit of 10 simultaneous SMTP connections period.
> >> Once you have ten active ones, any further connections will get this
> >> message.
> >>
> >>> smtp_accept_max_per_host = 5
> >> ... and a single IP can only have five connections at once.
> >>
> >> Note that despite the names being very similar to each other,
> >> 'smtp_accept_max_per_connection' means something completely
> >> different than 'smtp_accept_max_per_host'. One is about limits
> >> on SMTP connections, one is about limits on MAIL commands within
> >> a single connection.
> >>
> >> If your problem is that you cannot see where the connections
> >> are coming from, look at what 'exiwhat' reports, as well as
> >> ps, netstat, lsof, and other similar tools for looking at
> >> network connections.
> >>
> >> - cks
> > Provided that the server can respond.
> >
>
Let me see if this curtails anything.
--
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