Re: SMTP and ports 25 and 1025.
> > On 16.03.07 09:13, Easthope wrote:
> > > I am trying to understand how SMTP uses ports.
> > > Ultimately I want it to work through a SSH tunnel.
> > >
> > > Normally SMTP uses port 25 but in some cases it uses 1025.
> On Sat, Mar 17, 2007 at 10:40:12PM +0100, Matus UHLAR - fantomas wrote:
> > in what cases? there is port 587 designed and reserved for message
> > submission via SMTP.
On 18.03.07 14:13, Albert Dengg wrote:
> to my knowlege, port 587 is for _authenticated_ message transmission,
> e.g. from your own users, not for server<->server.
Yes. ehm... do you want to run server<-> server traffic on port 1025? Why?
> and everything that is for communication with the users can in prinziple
> run on any port you want, since you can tell then how to configure your
> clients, but there is no mechanism to tell other smtp servers "talk to
> me on port 666" or something.
Yes, and ... ? I miss your point. Of course you can run any service on any
port. But there's good standard on what services run at what ports and using
different port is usually harder to configure, detect etc etc...
so better us well-known (assigned) ports.
--
Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/
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On the other hand, you have different fingers.
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