What does this mean: 554 service unavailable. RBL blocked.

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Guest

When emailing my sister, who has an aol account, I received the message: 554
service unavailable [24.24.255.72] RBL blocked. She is staying at a Marriott
Courtyard, and I think they have wireless there. Can anyone tell me what the
error message means, and what I can do about it? I can't contact her by phone.
 
It means that your ISP is being blocked by a blacklist. Contact the address
supplied by the RBL to find out more information.

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, OCanada asked:

| When emailing my sister, who has an aol account, I received the
| message: 554 service unavailable [24.24.255.72] RBL blocked. She is
| staying at a Marriott Courtyard, and I think they have wireless
| there. Can anyone tell me what the error message means, and what I
| can do about it? I can't contact her by phone.
 

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