Domain Blacklist Checker
Check if your domain is listed on major email blacklists (RBLs/DNSBLs). Being blacklisted can severely impact your email deliverability.
Understanding Domain Blacklists
Domain blacklists (DNSBLs) are databases of domains that have been flagged for sending spam or malicious content. Email servers check these lists to decide whether to accept, filter, or reject incoming messages.
Why Domains Get Blacklisted
- Sending unsolicited bulk email (spam)
- High bounce rates from sending to invalid addresses
- Spam complaints from recipients
- Compromised accounts sending spam
- Poor email authentication (missing SPF, DKIM, DMARC)
Blacklists We Check
We check your domain against major blacklists including Spamhaus DBL, SURBL, URIBL, Spamcop, SORBS, SpamEatingMonkey, and JustSpam.