RBL check combines SMTP sender and Mail_From domains

Vernon Schryver vjs@calcite.rhyolite.com
Fri Sep 19 16:13:08 UTC 2008

> From: Chris Aseltine <ophidian@newsnation.com>

> > Sign up for a free account at Hotmail, send it some email, and see
> > what happens.  If your results are like mine for the last year or two,
> > to receive mail at Hotmail from a new or rare sender, you will be
> > forced to "bother to check a web page" (with or without SPF).
> Last time I checked, I emailed myself at Hotmail from a new IP and it was
> completely tossed.  Didn't even appear in the spam folder.  I also added
> the From: address to my "address book" and "whitelist".  Still tossed.
> This IP does not appear on any blacklist (as checked by mxtoolbox.com and
> others).  Conclusion: Hotmail is a joke.

I had the same results from similar tests until I was careful to include
Subject headers.  They might also require other common SMTP headers
such as To or Message-ID.

>           Conclusion: Hotmail is a joke.

but like Windows, it is something that millions prefer.

Vernon Schryver    vjs@rhyolite.com

More information about the DCC mailing list

Contact vjs@rhyolite.com by mail or use the form.