Re: [exim4] mixed up about terminology
On Mon, 13 Oct 2014 07:32:40 +0100
Jonathan Dowland <jmtd@debian.org> wrote:
> On Sun, Oct 12, 2014 at 09:05:14PM -0400, Jerry Stuckle wrote:
> > Among other things, legitimate MTAs have MX records.
>
> Not necessarily. In the absence of an MX record an A record is
> perfectly legitimate.
>
>
And as I've pointed out to Jerry, a lot of businesses outsource their
incoming email to commercial spam-cleaning services, as well as larger
businesses using separate send and receive servers, and some businesses
receiving email direct but sending via a smarthost. In each of these
cases, the MX would not necessarily have any connection with the
mail sending address. My IP address A-PTR record pair have no direct
connection with any of the email domains I use, with any MX, or any HELO
strings I send.
There's no one size fitting all with email. Heck, some people use
Yahoo...
--
Joe
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