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 1. Email Optimization
 2. EO: Email Optimization
 3. Blocklists




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ACCESSING VALIDITY REPUTATION DATA THROUGH DNS

Validity provides free public access through DNS to our sender reputation data,
including the Validity Certified Allowlist and the Return Path Blocklist, to
allow for use with message filtering. This is commonly accessed through default
rules enabled in SpamAssassin or directly through proprietary scripts and
applications.

Starting March 1, 2024, Validity will allow up to 10,000 requests to anonymous
users over a 30-day period. After 10,000 requests, you must create a MyValidity
account to continue using this free service. Upon the creation of a MyValidity
account, you will receive continued access to queries.

To avoid excessive queries, Validity recommends avoiding public DNS resolvers.
Instead, run a local caching, non-forwarding DNS server as the system resolver
on your mail server.


 

How is my request volume counted?
Validity maintains a rolling 30-day count of your requests. If you make 1,000
requests on April 15, for example, those 1,000 requests roll off on May 15—not
on May 1.

Why do I have to give you my IP address?
When you create your MyValidity account, identifying your accessing IP
address(es) allows us to associate your account to your requests and continue to
serve you response data.

I query from multiple IPs. Can I sign them all up?
Yes. When you create your MyValidity account, you can enter a range of IP
addresses to keep them all within a single account.

How do I update the information in my account?
Go to my.validity.com and select Log In in the upper right corner. Once logged
in, open the dropdown menu under your username in the upper right corner to
access your account info. This allows you to delete or edit IP addresses and
personal information.

I get a 127.255.255.255 response on all my queries to Validity reputation data.
What does this mean?

127.255.255.255 | Excessive Number of Queries

This query response code indicates that you are querying Validity reputation
data via a DNS resolver / IP address that is unregistered and making an
excessive number of queries. Consequently, the query is blocked, and it will
return no reputation data.

To avoid excessive queries, Validity recommends avoiding public DNS resolvers.
Instead, run a local caching, non-forwarding DNS server as the system resolver
on your mail server.

Why are excessive query numbers an issue?
Access to Validity reputation data is free for non-commercial use. We limit the
number of queries made to the free public mirrors to secure high service levels
for all its intended users.

What do I do if I repeatedly receive this code?
You need to ensure that it is not being used to reject mail or for any other
blocking or filtering of any internet traffic by any application. If your needs
(and query volumes) are non-commercial in nature, you can register your
*querying IPs at MyValidity to obtain higher query volume allowances. If your
needs (and query volumes) are commercial in nature, we recommend contacting our
Data Services team to discuss alternative action.

*Querying IPs are the IPs from the party performing the DNS query, this could be
your Maibox Provider's IPs and not your sender IP. Please verify this before
registering the sender IP as your Mailbox Provider may still block your sends.
 

Did this information resolve your issue?
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