Domain Monitoring
Know the instant your email config changes
A dropped MX record, a weakened DMARC policy, a rotated DKIM key — most senders discover these from a drop in opens, weeks later. We snapshot your records on a schedule and alert you with the exact before and after the moment anything moves.
Why config monitoring
The misconfiguration you never see coming
Reputation monitoring tells you when you're listed. Domain monitoring tells you when the setup that protects your reputation quietly breaks.
Watches your DNS, not just your IPs
We snapshot your SPF, DKIM, DMARC, MX, and BIMI records on a schedule and diff every check against the last. When a record changes, you know — with the exact before and after.
Before → after change alerts
A contractor tightens a DMARC policy, an MX record gets dropped during a migration, a DKIM key rotates and breaks alignment — you get an alert showing precisely what changed and when.
Routed where your team already works
Alerts land by email, Slack, or webhook, so a silent authentication regression turns into a ticket your team sees in minutes instead of a deliverability mystery weeks later.
Records watched
Every record that decides whether you're trusted
Sender authorization — flags removed includes, syntax breaks, and over-limit lookups.
Signing keys — catches rotated, removed, or malformed selectors that break alignment.
Policy enforcement — alerts when p= weakens from reject to quarantine or none.
Mail routing — detects dropped, reordered, or repointed mail exchangers.
Brand indicators — watches your BIMI record and VMC reference for breakage.
Reputation — continuous RBL checks layered on top of your config monitoring.
Config monitoring, not reputation monitoring
It's worth being precise about what this does. Blacklist monitoring watches your reputation — whether your domains and IPs appear on blocklists. Domain monitoring watches your configuration — whether the DNS records that authenticate your mail change underneath you.
The two are a closed loop. A broken DKIM selector or a softened DMARC policy is exactly the kind of silent regression that leads to reputation damage and blocklistings. Catch the change the day it happens and you fix it before it ever reaches your open rates.
Pair domain monitoring with DMARC report analyticsto see who's sending as your domain, and with the Deliverability Suite for the full authentication, placement, and reputation picture.
Monitoring FAQ
Common questions
Blacklist monitoring watches your reputation — whether your domains and IPs land on blocklists. Domain monitoring watches your configuration — whether your SPF, DKIM, DMARC, MX, and BIMI records change. They're complementary: one catches reputation damage, the other catches the misconfigurations that often cause it.
Records are polled on a recurring schedule and every check is compared against the previous snapshot. The moment a watched record differs from its last known-good state, an alert is generated.
Alerts can be routed by email, posted to a Slack channel, or pushed to a webhook so they flow straight into your incident or ticketing system. You choose per monitor.
Never debug a deliverability mystery again
Add your sending domains and get an alert the moment SPF, DKIM, DMARC, MX, or BIMI changes — before it costs you the inbox.
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