Incorrect rejection messages


At least one ESP and Spamhaus are currently investigating bounce messages at a couple ISPs incorrectly pointing to Spamhaus as the reason for the block. The bounce messages are taking the form:

smtp; 554 bizsmtp IB105. Connection refused. is
listed on the Exploits Block List (XBL) <> Please visit for more information.
smtp; 553 5.7.1 [BL21] Connections will not be accepted from because the IP is Spamhaus’s list; see
smtp; 553 5.7.1 [BL21] Connections will not be accepted from, because the ip is in
Spamhaus’s list; see

The IPs involved are not listed on any of the Spamhaus lists. It looks like there’s some corruption somewhere. I’ve heard about this from a couple different places, so if it’s happening to you it’s not just you. It’s also being addressed by people who can fix it.

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By laura

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