Paul Mansfield writes ("Re: [EXIM] virtual domain with some local addresses ?"):
> On Fri, 31 Jul 1998, Ian Jackson wrote:
> > The solution I came up with is to collect the domains together, but to
> > use a % to separate the original local-part and domain. This results
...
> > which can be handled at the far end with an appropriate %-hack
> > configuration.
>
> I don't think relying on the percent hack is a good idea.
In general, yes. However, you don't seem to have considered the
specifics of this case. Please read the configuration and my example
again.
> although spammers haven't seemed to cotton on to this, it does significantly
> weaken any anti-spam measures.
You'll notice that the domain for which the receiving host would have
to implement the %-hack is not in the DNS. Furthermore, even should
someone talk to my gateway system it would refuse relaying for that
domain.
The only way mail could arrive for that domain at the machine that
needs to handle it would be for it to have been generated at that
site, or fed to it via the bsmtp system that we're setting up. (The
site needs no internet-accessible SMTP listener other than my
gateway.)
Ian.
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