Re: SBC RBL

[Dave Pooser <dave.nanog () alfordmedia com>]

> >   550 5.0.0 ylpvm35.prodigy.net Access Denied. To request removal, send the
> > complete error message, including your ip addresses,  in an E-mail to
> > removeme () sbc sbcglobal net
>
> Interesting... we just started getting a bunch of these too. I wonder if
> there's a glitch on their side.

I just did an MX lookup for sbcglobal.net, which yielded a bunch of hosts
with prodigy.net hostnames:

;; QUESTION SECTION:
;sbcglobal.net.                 IN      MX

;; ANSWER SECTION:
sbcglobal.net.          4021    IN      MX      10 sbcmx4.prodigy.net.
sbcglobal.net.          4021    IN      MX      10 sbcmx5.prodigy.net.
sbcglobal.net.          4021    IN      MX      10 sbcmx6.prodigy.net.
sbcglobal.net.          4021    IN      MX      10 sbcmx1.prodigy.net.
sbcglobal.net.          4021    IN      MX      10 sbcmx2.prodigy.net.
sbcglobal.net.          4021    IN      MX      10 sbcmx3.prodigy.net.

And when I connected to one of them it seemed not to know it was an
sbcglobal.net MX:

mail:~ postmstr$ telnet sbcmx1.prodigy.net 25
Trying 207.115.57.15...
Connected to sbcmx1.prodigy.net.
Escape character is '^]'.
220 ylpvm21.prodigy.net ESMTP Sendmail 8.13.6 inb/8.13.6; Tue, 5 Dec 2006
17:22:34 -0500
helo mail.alfordmedia.com
250 ylpvm21.prodigy.net Hello mail.alfordmedia.com [12.106.209.189], pleased
to meet you
mail from:<dave.pooser () alfordmedia com>
250 2.1.0 <dave.pooser () alfordmedia com>... Sender ok
rcpt to:<[someuser]@sbclobal.net>
553 5.3.0 <[someuser]@sbclobal.net>... Relaying is NOT allowed here
quit
221 2.0.0 ylpvm21.prodigy.net closing connection

I'm going with "clueless until proven otherwise."
-- 
Dave Pooser, ACSA
Manager of Information Services
Alford Media  http://www.alfordmedia.com