What is Abusix?
Abusix is a global abuse data management platform whose blocklists power email security at ISPs, hosting providers, and enterprise mail systems worldwide. Their Mail Intelligence product and Guard API feed real-time lists of abusive IPs and domains directly into SpamAssassin, MTA configurations, and enterprise mail gateways. A listing on Abusix causes your outbound email to be rejected or routed to spam across a massive portion of the internet.
Why Abusix flags legitimate domains
- Your domain or IP was reported by abuse@ contacts at multiple ISPs
- A compromised user account on your domain sent bulk unsolicited email
- Your server was used in a spam campaign without your knowledge
- A phishing page hosted on your infrastructure was reported by a mail provider
- Your IP block is shared and a neighbouring IP triggered the listing
What a listing means for your business
Because Abusix feeds directly into ISP-level mail filtering, a listing can cause your transactional emails, marketing campaigns, and even support replies to silently fail, damaging customer relationships and revenue.
How BrandsDefender gets you delisted
We verify that your domain is clean, prepare the evidence Abusix needs, file the false positive dispute through the right channel and follow up until the flag is removed. No cure, no pay.
Frequently asked questions
Why are my emails going to spam after being listed on Abusix?
Abusix feeds into MTA spam filters at ISPs globally. Once your IP or domain appears in their Mail Intelligence feed, receiving mail servers automatically downgrade or reject your mail before it reaches the inbox.
Can I contact Abusix directly to request removal?
Abusix does provide a portal for delisting requests, but they require detailed evidence of abuse remediation. Incomplete submissions are routinely ignored. Our team packages the right evidence the first time.