[ILUG] Class C Addresses

[AJ McKee]

On Wednesday 07 November 2001  1:21 pm, you wrote:
> On Wed, Nov 07, 2001 at 06:06:59PM -0000, Treanor, Ciaran mentioned:
> > >  I'm certainly not joking. It's how DNS works, one of the
> > > most reliable time critical systems around. It's not going to work for
> > > everything, but people should be aware of it...
> >
> > Can you name some other things that use the approach you mention?
>
>  SMTP comes to mind. NNTP can also be configured to such news from
> multiple locations.
>
>  Ages back, I was working on a HA webmail system. We had three webservers,
> running PHP behind a load balancer, all lovely.
>
>  However IMP, the webmail client talked to a MySQL database for temporary
> storage of session info. It talked to an IMAP server, and an SMTP server
> for getting/sending mail. The IMAP server authenticated against an oracle
> server.
But its much nicer if you use qmail with a mysql hack ( I think I have seen 
one for oracle as well) for a user list and stuff. Mails still kept on file 
system. A lot like the way hotmail done it for ages.  May still do actually. 
Then use PHP as the web client