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Re: MTA experts: address rewriting depending on next hop

On Fri, Jul 24, 2009 at 08:10:16AM +0200, Siggy Brentrup wrote:
> On Thu, Jul 23, 2009 at 23:04 -0600, lee wrote:
> > Look at my headers: who cares? Unless you're an ISP or MSP or run the
> > servers for a company, nobody is going to mind.
> That's wrong, as with HTTP and other text based protocols relying on
> headers not normally visible to the user, you're spreading quite a lot
> of information and there are interested parties like google that run a
> business analyzing this info.

Ok, that's crazy --- but good to know, thanks!

> > To actually run a mail server to send *and* receive mail, you need a
> > static IP.
> Thats wrong too, you need at least 1 (preferrably 2) MX records naming
> hosts with A or AAAA records, whether static or dynamic IP doesn't
> matter the MX MTAs willing to relay your domain and you need an ISP
> that doesn't block port 25.

How do you get that to work reliably when your IP changes? Like how do
you prevent mail from being sent to another host that now has the IP
yours had before? How do you remove the IPs you get assigned from

> Well, this was my last post in this thread, I'll grant you the final
> word if you care, maybe you can prove that Exim's FAQ 805 or 807 iirc
> the link is on d-d - is wrong.  I'm not inclined to discuss this
> subject any further on d-u as I've decided on a reliable solution the
> day before yesterday.

Funny, how am I supposed to know about what link you were talking?
Everyone his own ...

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