The Invaluement blacklist is made up of three commercial anti-spam blacklists.
Here are the three different lists:
- ivmURI: This lists domains owned by spammers.
- ivmSIP: Spammy IP addresses either overlooked or not yet listed by Spamhaus, from botnets, elusive snowshoe spammers, or black-hat mailbox providers. A black hat sender is a company that sends email to recipients who have not given permission to senders to send to them.
- ivmSIP/24: IP address ranges or sub-nets where spam-sending patterns have been detected.
Rather than using spam traps, Invaluement monitors web hosts to get complaint information from the web host; this information is used to generate listings. Invaluement listings are factored into many anti-spam reputation systems.
- Listings occur at the IP address and domain level, depending on the different lists
- Impact on deliverability is high
Reasons for getting listed
Your IP address or domain may be listed if:
- It has high subscriber complaint rates
- It has high Mailbox Provider (MBP)-marked spam rates
- It is sending spam
- It is part of a known range of IP addresses or domains that have been classified as legitimate spammers
- It is sending URLs that have been identified as malicious
How to get off this blacklist
This blacklist supports manual requests to remove IP addresses.
If senders are listed on the ivmSIP/24 list, they can be removed if:
- Invaluement doesn't have spam on file from the individual IP addresses, but only has spam from nearby IP addresses.
- The nearby spam-sending IP addresses are not sending the same campaigns and are not under the direct control of the IP address owner who is requesting delisting.