Same issue on 2.5.1.26351 Classic Server.

A slight difference is that it waits a long time before the connection reject error message.

--- In firebird-support@yahoogroups.com, Mark Rotteveel <mark@...> wrote:
>
> On Wed, 24 Oct 2012 12:18:01 -0000, "ma_golyo" <ma_golyo@...> wrote:
> > Hi!
> >
> > Cannot connect to server under heavy load.
> > I get "connection rejected by remote interface" (335544421).
> >
> > Is this a bug, ot there is an option in firebird.conft to avoid this?
> >
> >
> > Firebird.log (FB20 Classic Server)
>
> What is the exact version of your Firebird?
>
> Mark
>