This blocklist is no longer operational. DNS queries return NXDOMAIN. Remove from MTA configurations to avoid query timeouts.
What it is
SERVICESNET operated a small DNSBL covering spam sources. The project has been discontinued.
How it affects SMTP delivery
No impact. Remove from configurations.
What causes a listing
N/A, defunct.
How to get removed
No removal necessary.
For the full reference catalog, see the email blocklist directory.
Delisting process in detail
The ServicesNet blocklist targets observed spam sources. Delisting is handled through the operator’s portal. Response times are typically within 24-72 hours for well-documented requests. Automatic decay applies when the observed spam pattern stops. ServicesNet is a smaller specialty blocklist with limited global deployment.
Prevention practices
ServicesNet prevention follows standard anti-abuse fundamentals: authenticated sending, list hygiene, complaint monitoring. Because ServicesNet is a smaller blocklist, its impact is limited to receivers that specifically query it. Monitor ServicesNet alongside major public blocklists (Spamhaus, Barracuda) for comprehensive coverage. Gradual IP warmup and confirmed opt-in remain the primary defenses.
Common listing causes
ServicesNet listings correlate with observed spam patterns. Common causes include purchased lists that hit ServicesNet honeypots, compromised shared-hosting accounts, and coordinated spam campaigns. Because ServicesNet operates a smaller network, listings typically reflect specific abuse patterns.
Related blocklists
ServicesNet operates alongside other specialty blocklists in the broader anti-spam ecosystem. Enterprise reputation monitoring combines smaller lists like ServicesNet with major public blocklists (Spamhaus, Barracuda, SpamCop) for comprehensive coverage. Smaller blocklists can react faster than consensus lists to emerging spam patterns, occasionally providing early-warning signals for reputation degradation.
About the Author
Alaa · LinkedIn
Email infrastructure specialist with 8+ years of hands-on experience in SMTP, deliverability, and email verification. I’ve configured and troubleshot mail systems across Postfix, Exchange, and cloud relays, managed IP reputation and warmup campaigns, and built verification pipelines processing millions of addresses. My work spans DNS authentication (SPF, DKIM, DMARC, BIMI), bounce handling, blocklist monitoring, and compliance frameworks including CAN-SPAM and GDPR. I write every article on SMTPedia to give email professionals, developers, and marketers the accurate, RFC-grounded reference they need.
About SMTPedia
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