dot5 "black listed"?

I tried to send an E-mail with Squirrelmail from my dot5 account today, and it got rejected like this (I changed the E-mail address):

The original message was received at Mon, 28 Apr 2003 11:02:27 -0500 from localhost [127.0.0.1]

----- The following addresses had permanent fatal errors ----- <x@x.net>
(reason: 550-rejected because 207.44.158.69 is in a black list at relays.osirusoft.com)

----- Transcript of session follows -----
... while talking to ultra16.uk2net.net.:
>>> RCPT To:<x@x.net>
<<< 550-rejected because 207.44.158.69 is in a black list at relays.osirusoft.com <<< 550 [1] signalsllc, see http://spews.org/ask.cgi?S2604 550 5.1.1 <x@x.net>... User unknown

What's the deal? I E-mailed dot5 this morning, but haven't heard back. Maybe this explains why the same guy can't reach my site anymore, dot5 is on some black list. Gimme a break.

 

 

 

 

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