Re: [exim] Ports

On Mon, 2010-08-16 at 23:24 +0100, Stephen Gran wrote:
> On Mon, Aug 16, 2010 at 10:37:19PM +0100, Martin A. Brooks said:
> > On Mon, August 16, 2010 21:55, Grant Peel wrote:
> > > Hi all,
> > >
> > > What are all the ports that exim might use for the control channell
> > > and data transfers?
> > >
> > > I have a hole punched in my switche's firewall, (port 25 and 587).
> > > but somehow I am still getting operation timeouts when it talking
> > > with other servers.
> >
> > What has your research into the SMTP protocol suggested to you so far?
>
> I suspect that the twin bugbears of ident and name service are going to
> prove fruitful areas of research.

And ICMP, of course. Blocking that could lead to timeouts as soon as you
actually start trying to transfer data.

--
dwmw2