[Techtalk] multiple domains, single server

[Mary]

On Wed, Dec 11, 2002, Malcolm-Rannirl wrote:
> Maybe most people don't look at the transit path, but some people do.
> (Take the "how much can people find out about me" challenge on this list from 
> a few weeks back for examples of what can be turned up if someone looks. I 
> know some of the stuff that turns up from this particular net-identity and 
> there's not much I can do about some of it, such as the web accessible 
> archives for this list).

Everyone running a mail server that I've heard of simply accepts this.
Getting an MTA to look at people's From: address in order to determine
its own host name seems like somewhat of a security risk to me.

In any case, many remote servers will put the result of a reverse lookup
into the headers when they receive mail from you. Unless you can control
which interface the mail travels out on, you won't be able to control
this reverse lookup.

-Mary