All --
I'm posting this to the list, rather than just to Dan
and Rob, in case others have similar problems.
___________________________________
On PDML, Dan Scott wrote:
> Hi Rob,
>
> Being rejected by a blackhole is no mean feat. <g>
>
> Probably just a hiccough in my ISP's mail system. Send it again and we'll
> see if it gets through.
>
> Rob wrote:
>
> >Hi Dan,
> >
> >Your blackhole has refused me access? :-)
> >
> >"Diagnostic-Code: smtp; 550 5.7.1 Mail from 203.2.192.84 refused by blackhole
> >site blackhole.texas.net"
Sounds an awful lot like a problem I have, wherein:
a. I can e-mail my wife at her workplace from either of
my mail servers (personal or work).
b. Her messages to me bounce off either server.
Turns out, her e-mail server at work has been identified as an
"open relay," i.e., it's configured (inadvertently, I suspect)
so that it'll transmit mail from anywhere to anywhere. Spammers
love open relays because they can be used to anonymize(?) UCE
and mask the spammer's real location/identity.
There are services that test Internet mail servers, try to
identify open relays, and publish lists of ones they find.
More and more ISPs (including both of mine) are using these
lists to block out the spammers.
I took the liberty of looking up Rob's mail server (based on
the IP address in the bounce message) in one of the data-
bases. It appears on four of the open relay lists. Go here:
http://ordb.org/lookup/rbls/?host=203.2.192.84
Rob, this is something you need to take up with your ISP.
Dan, you might want to see if your ISP would grant an exception.
HTH,
Stephen Moore
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