There are a number of sites online that provide public information about reputation of an IP address or domain name.
- Sender Score – http://senderscore.org/. Provided by Return Path. They collect data from some ISPs and blocklists. Using a proprietary formula, they calculate a sender score running from 1 – 100 for each IP address sending mail to their network. Higher scores means a better reputation. Can be inaccurate for IPs sending very low volumes of email. Some ISPs use Sender Score to feed into their delivery decision engines.
- Sender Base – http://senderbase.org/. Provided by Ironport / Cisco. They collect publicly available data as well as data from their userbase. Reputation is reported as “good” “poor” or “neutral.” Senderbase scores feed into some ISP delivery decision engines.
- AOL reputation – http://postmaster.aol.com/cgi-bin/plugh/check_ip.pl. Reports the reputation of IPs as determined by AOL. Uses a scale of “good” “poor” or “neutral”.
- RoadRunner blocks – http://security.rr.com/amIBlockedByRR. Reports if a particular IP address is currently being blocked from sending mail to Road Runner.
- Spamhaus blocks – http://www.spamhaus.org/. Reports if an IP is currently listed on any of the Spamhaus lists.
- Sendmail Reputation – http://sendmail.com/sm/resources/tools/ip_reputation/. Reports reputation of an IP address as measured by Sendmail.
- Trusted Source – http://www.trustedsource.org/. Provided by McAfee.
- Commtouch – http://www.commtouch.com/check-ip-reputation/. Provided by Commtouch.
- Barracuda Central – http://www.barracudacentral.org/lookups/. Provided by Barracuda, shows what IP addresses or domain names are currently blocked.
- SNDS – http://postmaster.live.com/snds/. Provided by Microsoft / Hotmail / Live.com. Will show IP addresses that are currently blocked by Microsoft.
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Awesome resource, Laura!
Doesn’t Vernon have reputation hooks in the DCC now as well?
Couple more than I have in my bookmarks:
ReputationAuthority – http://www.reputationauthority.org/ – provided by WatchGuard. Gives a reputation score along the lines of SenderScore, and offers automated alerts for reputation drops.
IP Reputation Investigation – http://ipremoval.sms.symantec.com/lookup/ – provided by Symantec. Allows lookups by IP to determine whether you have negative reputation according to their databases or not.
URIBL – http://www.uribl.com/. Lets you check whether a domain has been included in their URI blacklist.
LashBack – http://www.lashback.com/reputation/UnsubSafeLookup.aspx. Lets you check the reputation of an IP as LashBack’s database sees it.
[…] very difficult. A number of tools for checking the reputation of your IP addresses can be found at Word to the Wise. At this volume level email is key to your business and a solid reputation is going to be […]
[…] Email Reputation monitoring sites – Word to the Wise check if your domain has good reputation, sender score, sender base, aol, IP blocks Oct 10th, 2010 by kevin. ← links for 2010-10-09 […]
ThreatSTOP provides a service to block IP addresses that are currently bad based on feeds such as the DShield list, PhishTank, the ZeuS tracker and so on. If you want to see whether a particular IP address is (or has ever been) in our database then go to the “check IP” page on our site http://threatstop.com/checkip.php
edited to fix URL typo
This is a great list…and I’m using it regularly. Thank you! Small request…can you hyperlink all the sites instead of providing them in plain text?
[…] very difficult. A number of tools for checking the reputation of your IP addresses can be found at Word to the Wise. At this volume level email is key to your business and a solid reputation is going to be […]
[…] very difficult. A number of tools for checking the reputation of your IP addresses can be found at Word to the Wise. At this volume level email is key to your business and a solid reputation is going to be […]