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The SMTP IPv4 DNS Block List.
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Be informed all DNS operations are now stopped.
We hope be back online soon.


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Below are some recently added IP removal requests (in process/pending):
[generated: Mon Jan 26, 2015 at 09:21 Eastern Standard Time] (If the timestamp does not appear recent - please refresh the page.)
It is normal, and common, for an IP to be pending for 24+ hours (do not panic if your IP is listed here for some time - or if it does not show immediately, this list is not generated on demand)
If you can not find your IP here please return in 10 minutes - if it is still not here, try again using another browser or from another system.
If it is still not here, drop us an email so we may look into it.
Entries sorted alphabetically (left to right) - not numerically:
- 0 -
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Below are some recently denied IP removal requests (sorted by IP):
[generated: [still processing this directive]] (If the timestamp does not appear recent - please refresh the page.)
Note: Before complaining please take note of the text to the right of the IP, as it may indicate the denial reason. Also, as it appears that most denials are related to improper FCrDNS, please familiarize yourself with the FCrDNS process/requirements before continuing with your removal request(s)
(and read through this link which shows some typical reasons why we list IPs)
Entries sorted alphabetically (left to right) - not numerically:
[still processing this directive]
Most denied IPs remain listed because they fail to have a rDNS suitable for SMTP email servicing.
If you are running an SMTP server, you must ensure that the rDNS entry matches your server's EHLO/HELO string (while ensuring the entry is a FQDN and from a domain under your control - and not from a domain of your ISP or hosting service provider, etc.)
Additional info may be be provided within parens:
(DNS) = DNS issue.
(EMAIL) = Email required, from IP, to confirm proper server configuration prior to removal.
(FCrDNS) = FCrDNS check failure, may require email from IP, to confirm proper server configuration prior to removal.
(FW) = Firewall is allowing internal systems direct Internet SMTP access.
(FRV) = Firewall Requires Verification - it has allowed internal systems direct Internet SMTP access.
(IP) = IP related problem - rDNS IP mismatch.
(NOMX) = Domain has no MX record.
(NXD)/(NXDOMAIN) = Non-existent domain; Invalid/unresolvable FQDN.
(OVERLOAD) = rDNS has more than one entry.
(RDNS) = rDNS issue.
(SITE) = SITE related issues.

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