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 -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
