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Re: [PLUG] [OT] Comcast RBL
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Running my own mail server has nothing to do with it. I already do. And I
maintain an smtp relay cluster for a large regional ISP. That, plus my
personal colo mail server, plus work I do for some local businesses - is
what led me to my comments.
All of these sources have having their msgs to comcact blacklisted by this
stupid internal rbl that they use.
Was doing some googling, and many others have this problem. Apparrently,
HSN (home shopping network) was blocked for awhile. HSN fought with
Comcast, because users weren't getting their order confirmation emails and
tracking info. From HSN's experience, it takes very little to get in this
rbl, and it takes alot of effort to get off.
I take solace in the fact that comcast is a dying beast. Once the two
telco giants (SBC-ATT and Verizon-MCI) cover this country in fiber, I dont
see how cable companies can survive - especially for internet access
(which they suck at anyway).
-john
On Fri, 3 Mar 2006 tek@undergroundinfection.net wrote:
>
> > This is sort of off-topic, but maybe somebody on this list works at
> > Comcast and the message can be forwarded to their bone-head mail
> > admins.
> >
> > Apparently, Comcast uses an internal blacklist for spam purposes. I say
> > internal, because no info about it is available online (like a web-gui
> > to pro-actively check your server against, or a hookin to openrbl.org)
> > and you can't do a RR lookup against it like other rbls.
> >
> > In the past week I have had to deal with three groups, all of which
> > have been blacklisted by this rbl (comcast calls it rblmx.comcast.net -
> > but publicly that doesnt resolve to anything). One of the groups was an
> > ISP, the other two were small companies.
> >
> > I say bone-head mail admins because from what I can tell, this is a
> > 100% PASS/FAIL type of blacklist. If you are in it, its a 100% blocking
> > of your mail. Haven't they got the message, spam filtering needs to be
> > based on a scoring system like SA. Otherwise, you are going to have
> > TONS of false positives. And for an enormous ISP/mail provider, they
> > should be embarrassed by the amount of legitimate email they are
> > blocking.
> >
> > While they are at it, they might as well block every single email with
> > the word viagra in it. Clearly, if that word exists, then it MUST be
> > spam - including this very own email.
> >
> > Oh and here is the final kicker, if your on the blacklist - you cant
> > email comcast about it. The abuse@ and postmaster@ accounts use the
> > same blacklist. One would think that the accounts that have been setup
> > to resolve mail issues, would NOT have filtering enabled - which is the
> > cause of the issue in the first place. So you have to setup a hotmail
> > account just to report the issue.
> >
> > Argh...
> > john
> >
> > ___________________________________________________________________________
> > Philadelphia Linux Users Group --
> > http://www.phillylinux.org
> > Announcements -
> > http://lists.phillylinux.org/mailman/listinfo/plug-announce
> > General Discussion --
> > http://lists.phillylinux.org/mailman/listinfo/plug
> >
>
> Maybe now is a good time to setup your own mail server. The only thing I
> rely on comcast for, is access. And they can barely do that right. Spend
> the 6 bucks, get a domain, set up qmail and pretend comast is a good isp.
> We could hope for a better cable provider but the government killed that
> chance by deciding that the cable companies don't have to share the
> wire(gotta love monopolies). Personally I think once the electric
> companies finalise broadband through a power outlet(it's coming), comcast
> is done for. Prices will drop and competetion will be back in the game.
> right now the only true competitor is verizon(hehe) and they're more than
> happy to be the next aol(cheap slower internet).
>
> -----------------------------------------------------------------
> Tek-69
> <--===Keep Hope Alive===-->
>
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> ___________________________________________________________________________
> Philadelphia Linux Users Group -- http://www.phillylinux.org
> Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
> General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
>
___________________________________________________________________________
Philadelphia Linux Users Group -- http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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