[jadmin] Wildcard and SRV records (too much subdomains)

[Dominic Lepiane]

On Tuesday 06 March 2007 10:17, Tony Finch wrote:
> On Tue, 6 Mar 2007, Matthias Wimmer wrote:
> > ... I'd even love to see, that SRV records would get required. It would
> > allow a server, gateway, ... to see if a domain is used for XMPP. This
> > would be especially helpful for server supporting different protocols to
> > do inter-domain messaging. (E.g. a XMPP+SIMPLE server).
>
> The MX-to-A fallback in email is a pain in the neck, so I would support
> getting rid of the SRV-to-A fallback in XMPP. It'll make it that much more
> difficult for rogue servers.
>
> Tony.

The fallback to A helps simplify the setup of small deployments since the 
server administrator may not understand DNS as well as they should and also 
may be working with managed a DNS tool that does not support SRV records, 
like zoneedit.com, for example.  So I would consider the removal of a 
fallback to always be a barrier to legitimate users and only sometimes a 
barrier to illegitimate ones.

Like Jacek said, even though you *could* setup a mail server without an MX 
record, few or no email admins would even consider it in this day and age.  
Likewise, despite initially knowing nothing about SRV records, I would not 
consider setting up an XMPP without them now.

Ciao

-- 
Dominic Lepiane
The IRMACS Centre
Simon Fraser University

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