Check Email IP Blacklist Status
Scan your domain or IP against 100+ DNS blacklists to find deliverability issues.
Scans 100+ DNSBLs
Major Blacklists We Check
Spamhaus
SBL, XBL, PBL
Barracuda
BRBL
SpamCop
BL
SORBS
Multiple lists
CBL
Composite BL
UCEPROTECT
Level 1, 2, 3
Invaluement
ivmSIP, ivmURI
+90 more
Full scan
Why Email IPs Get Blacklisted
Sending spam (intentional or compromised)
If your server sends spam-whether intentionally or because accounts were compromised-blacklists will add your IP. Secure your server and audit outbound mail.
Hitting spam traps
Spam traps are email addresses that should never receive mail. Sending to them indicates poor list hygiene or purchased lists. Clean your email list regularly.
High bounce rates
Sending to many invalid addresses signals poor list quality. Remove bounced addresses immediately and use email verification before sending.
Shared IP reputation
If you're on shared hosting or a shared IP pool, another sender's bad behavior can get the IP blacklisted. Consider a dedicated IP for important mail.
Open relay or misconfiguration
An open relay allows anyone to send mail through your server. Spammers exploit this. Ensure your mail server requires authentication.
New IP without warmup
New IPs have no reputation. Sending high volumes immediately looks suspicious. Warm up new IPs gradually over weeks.
How to Get Delisted from Blacklists
Identify the Problem
Check why you were listed. Most blacklists provide a reason (spam, open relay, etc.). Fix the root cause first.
Stop the Spam
If compromised accounts are sending spam, reset passwords, enable 2FA, and audit your mail queue.
Request Delisting
Visit each blacklist's website and follow their delisting process. Some auto-delist after a period; others require manual request.
Wait for Propagation
Delisting can take hours to days. Some blacklists have waiting periods before allowing delisting requests.
Monitor Continuously
Set up monitoring to catch future listings early. Getting relisted after delisting is harder to recover from.
Frequently Asked Questions
How do I check if my IP is blacklisted?
Enter your email server's IP address or domain in a blacklist checker tool like this one. It will query multiple DNS-based blacklists (DNSBLs) and report which ones list your IP.
How do I get delisted from a blacklist?
Each blacklist has its own delisting process. Most require you to visit their website, identify the listing reason, fix the underlying issue (stop spam, secure server), and submit a delisting request.
Why is my IP blacklisted?
Common reasons include: sending spam (intentionally or via compromised accounts), high bounce rates, hitting spam traps, open relay misconfiguration, or being on a shared IP with spammers.
Monitor Blacklist Status 24/7
Create a free account to get instant alerts when your IP gets blacklisted and track delisting progress.
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