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LASHBACK

What you see when your domain has this problem
Added to LASHBACK Details area Ignore

More Information About Lashback

The Lashback Unsubscribe Blacklist (UBL) typically suggests that your network was subjected to a possible directory harvesting attack where someone either used the server or email accounts on the server to send "Unsubscribe" probe traffic or phishing emails.

Lashback Reports Sources Of Spam

Spam-based Blacklists are those that will list either single IP Addresses or entire ranges that have actually received Spam, i.e. Unsolicited Bulk Email (UBE) in their Spamtraps from an IP-Address. This could be a result of a compromised email account, an Open Relay, or simply sending mass emails / marketing and not following best practices according to the "CAN-SPAM Act of 2003" (ref: https://en.wikipedia.org/wiki/CAN-SPAM_Act_of_2003)

Lashback Requires A Manual Delisting Request

This blacklist does support a manual request to remove or delist your IP Address from their database. Please note that removal requests that are submitted without addressing the core problem will likely result in your IP Address or Domain being relisted in that database, which can cause subsequent problems and extended listing periods without release.

More information about LASHBACK can be found at their website: http://www.lashback.com/blacklist/