THIS ARTICLE IS FOR: ✅ DFY Managed
Stage: Live
Owner: CS
Last updated: 2025-12-15
TL;DR
CNAME/DNS “not verified” warnings are usually UI bugs — your setup is still valid.
Disconnected email accounts are normal and automatically handled by ListKit.
Most blacklist alerts are low-impact and require no action.
If something truly affects deliverability, ListKit will notify you.
When you’d use this / Why it matters
Use this article if you see warnings related to DNS, CNAME, disconnected inboxes, or domain blacklists and want to know whether you need to act. In most cases, these are expected infrastructure behaviors handled by ListKit’s technical team.
Why does it say my CNAME or DNS is not verified?
Short answer
It is verified.
ListKit uses a third-party sending provider for cold email infrastructure. Occasionally, their UI incorrectly displays DNS or CNAME as “not verified,” even though everything is properly configured.
How to check (optional)
If you want to confirm manually:
CNAME
Go to Email Accounts
Open any email account
Click General
Scroll to the bottom
DNS
Go to Email Accounts
Click Advanced Settings
Click Validate DNS
If you see a warning but campaigns are sending normally, you can safely ignore it.
Why are my email accounts disconnected?
Important: This is handled by ListKit
🚨 You do not need to do anything.
Email account disconnections are a normal part of cold email infrastructure, and ListKit manages them automatically.
Common reasons accounts disconnect
Disconnections can happen due to:
Infrastructure updates
Platform upgrades
Security improvements
Backend optimizations
Technical limitations
Temporary API issues
Server-side rate limits
High-volume processing backlogs
Protective measures
Warmup safety pauses
Deliverability protection rules
Automated anomaly prevention
What happens after reconnection
Once reconnected:
Campaigns resume exactly where they left off
No deliverability damage occurs
No performance data is lost
Sending reputation remains protected
What you should NOT do
Do not:
Try to reconnect accounts manually
Create replacement email accounts
Pause or edit campaigns
Worry about performance
Instead:
Continue normal operations
Let the system self-correct
Trust the monitoring in place
What should I do if my domain is blacklisted?
Short answer
In 9 out of 10 cases: nothing.
Most blacklist alerts come from low-impact or irrelevant blacklists that do not affect real inbox placement.
The blacklist reality
There are hundreds of blacklists
Most have zero impact on Gmail, Outlook, or Yahoo
Monitoring tools often surface noise and false alarms
Blacklists that actually matter
Only a small number of lists are consequential, including:
Spamhaus
Barracuda
SpamCop
Microsoft internal lists
Listings on obscure blacklists are usually meaningless.
How ListKit handles this
As your tech partner, ListKit:
Continuously monitors all domains
Distinguishes high-impact vs. low-impact listings
Takes action automatically when needed
If it’s a real issue, we’ll tell you
If a domain appears on a high-impact blacklist:
You will be notified directly
We’ll explain what happened
We’ll handle mitigation and recovery
We’ll advise on any temporary adjustments
If you do not hear from us, it means:
The listing is low impact
Deliverability is unaffected
No action is required
Expected outcome
After reading this, you should understand:
Which warnings can be ignored
What ListKit manages for you
When (and if) you need to act
Why deliverability remains protected even during infra events
Troubleshooting / FAQs
Should I ever try to fix DNS or reconnect accounts myself?
No. This can cause more harm than good.
Will disconnected accounts hurt my campaign results?
No. Campaigns resume safely after reconnection.
I found a blacklist alert from a third-party tool — should I panic?
No. If it mattered, ListKit would already be handling it.
How do I know if something is actually wrong?
You’ll hear directly from the ListKit team.
Bottom line:
Deliverability and infrastructure issues are part of cold email at scale. ListKit actively manages these so you can focus on replying to leads—not debugging tech.