RE: SMTP and ports 25 and 1025.
Matus UHLAR - fantomas wrote on Sunday, March 18, 2007 9:39 AM -0500:
> On 18.03.07 14:13, Albert Dengg wrote:
> > 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.
Actually, there is a standardized way to communicate ports for a given
service via DNS: SRV records. Except that almost nobody uses them :)
Since this mechanism did not exist until recently, MTA's pay no
attention to it, as far as I know.
--
Seth Goodman
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