SenderRadar FAQ: subdomains, wildcard, quotas, retention

Why is my subdomain not in the list?#

The "Identified subdomains" table does not claim to be exhaustive: it lists the subdomains SenderRadar knows for this domain, from its own analysis base. A subdomain created recently, used only internally or never exposed publicly may not appear. To get its analysis, type it directly into the form: the report will then show the subdomain's block and that of its organizational domain.

Why are subdomains I do not recognise listed?#

They are names observed as attached to the domain, sometimes old or created by a provider (sending platform, support tool, CDN). If they should no longer exist, that is useful information: a forgotten subdomain with an active SPF or MX remains an entry point. If they merely return the wildcard configuration, they are hidden and counted in the wildcard block.

What is a DNS wildcard and why is it flagged?#

A wildcard is a *.example.com record that answers for any name without an entry of its own. As a result, anything.example.com returns an address, sometimes an MX, an SPF or a DMARC record. SenderRadar flags it because it changes how the report should be read: subdomains that only repeat the wildcard are not real subdomains, and a wildcard with MX accepts mail for an infinity of addresses. The page on subdomains and wildcards details the consequences.

Why does the organizational domain differ from what I typed?#

The organizational domain is the "registrable" domain the typed name depends on, determined from the Public Suffix List. For news.example.co.uk, it is example.co.uk, not co.uk. This is the level at which DMARC defines the policy inherited by subdomains and at which the whois is looked up.

How long is a report kept?#

Thirty days from the analysis. The expiry date is shown at the top of the report and in the notification email. After that, the link no longer works; a new analysis creates a new report.

Why does the report not reflect my DNS change?#

A report is a snapshot taken at analysis time. If the record was changed afterwards, the report shows the old value. Besides, a DNS change propagates according to the record's TTL: from a few minutes to several hours. To check a fix, wait for the TTL to expire, then run a new analysis.

Why does SPF show "permerror" when my record looks correct?#

The usual causes, in order: more than ten DNS lookups (each provider's include often consumes several), more than two void lookups (an include pointing at a name that no longer exists), two v=spf1 records on the same name, or a syntax error. The expanded view shows the lookup counter, the void lookups and the mechanism tree, which makes it possible to locate the cause.

DMARC says "Inherited from". Is that a problem?#

Not necessarily. A subdomain without its own _dmarc record inherits the organizational domain's policy, as RFC 7489 specifies. It is a problem if that policy is none, or if an sp=none tag weakens subdomains, and the subdomain sends mail. In that case, publish a record of its own or strengthen sp.

What does an "Unclassified" MX mean?#

The MX host has not been matched to a known provider. It may be a self-hosted server, a regional provider or a pattern not yet recognised. It is not a configuration anomaly; the host is published and functional from the DNS point of view.

What are the analysis quotas?#

The number of analyses per day is limited, so that the service remains available to everyone. Without an account, the daily quota is reduced; with a free account, it is higher and the analyses of the last thirty days stay accessible from the personal area. Quotas reset every day. The message "Daily limit reached" means waiting until the next day or creating an account.

Is the service free?#

Yes. The analysis, the guide and the glossary are available without payment. Hosting is funded by advertising spaces, displayed in accordance with each visitor's consent. No paid offer is announced.

Why is an email address required to run an analysis?#

The analysis is not instantaneous: it is queued and usually takes a few minutes. The address is used to send the report link once results are ready. With an account, the account's address is used automatically.

Does SenderRadar monitor my domain continuously?#

No. SenderRadar is not a monitoring service: there is no periodic check and no alert on change. To follow a domain over time, run a new analysis after a change has been made, or use a dedicated monitoring tool.

How do I suggest a feature or report an error?#

From an account's personal area, the "Suggest an improvement" form sends an idea, a bug or a need. Without an account, the site's contact form serves the same purpose. MX classification errors and misinterpreted records are particularly useful to report, with the domain name concerned.

Can I analyse any domain?#

Yes, any public domain or subdomain can be entered. The information shown is what DNS and whois publish; no private data is revealed. For a request related to personal data, the contact form is the intended channel.