spam.dnsbl.anonmails.deWhat Anonmails DNSBL is
Anonmails.de operates a DNSBL at spam.dnsbl.anonmails.de targeting IP addresses observed sending spam to Anonmails-monitored addresses, with particular focus on abuse affecting German email infrastructure. It is a regional list rather than a global one like Spamhaus or Barracuda Central. Its influence is concentrated among German receivers and mail servers using SpamAssassin with regional rulesets enabled.
How to check if your IP is listed on Anonmails
Query the DNSBL directly with dig using reverse octet notation. For an IP 192.0.2.10, the query is:
dig +short 10.2.0.192.spam.dnsbl.anonmails.deA response of 127.0.0.2 (or another 127.0.0.x address) means the IP is listed. An empty response means not listed. Alternatively, use the lookup form on anonmails.de to check.
Typical bounce message signatures
| Receiving MTA | Bounce string you will see |
|---|---|
| Postfix (Anonmails as reject_rbl_client) | 554 5.7.1 Service unavailable; Client host [X.X.X.X] blocked using spam.dnsbl.anonmails.de |
| Exim (custom ACL) | 550 X.X.X.X listed at spam.dnsbl.anonmails.de |
| SpamAssassin scoring | Header X-Spam-Report contains RBL: anonmails-dnsbl with a score contribution (typically +2 to +4) |
| Sending server log | DSN 5.7.1 with reference to spam.dnsbl.anonmails.de in the diagnostic-code line |
Common listing causes
| Cause | Detail | Fix pointer |
|---|---|---|
| Purchased or scraped lists with German addresses | Anonmails operates spam traps on legacy German addresses. Purchased lists frequently hit them | Confirmed opt-in with double-opt-in verification, purge purchased data |
| Compromised shared-hosting account on your IP | Common on cheap VPS providers where the same IP was reused for a spammer | Rotate IP, verify no residual scripts sending; check maillog for anomalies |
| Forwarding user-generated content without filtering | Contact form or comment notifications relaying spammer content to Anonmails-monitored inboxes | Enable inbound spam filtering, rate-limit contact form submissions |
| Missing or weak SPF/DKIM on the sending domain | Unauthenticated German-language mail is heavily penalized by regional filters | Publish SPF, DKIM, and DMARC records |
| Botnet activity on your network | Compromised endpoint sending outbound spam through the corporate mail relay | Audit outbound flow, restrict SMTP to authenticated senders only |
How to get delisted from Anonmails
- Confirm the listing. Query
dig +short REVERSED-IP.spam.dnsbl.anonmails.deas shown above. Also check nearby regional lists (NIX Spam, Schulte, IX Manitu) since German receivers query several in combination. - Identify and stop the source. Delisting will succeed only if the underlying cause is resolved. Check outbound logs for the past 7 days, isolate the abuse, and stop it before submitting the request.
- Submit the manual removal request via the removal form on
anonmails.de. Include your IP, the technical reason for the listing (compromise contained, IP rotated, list purged), and evidence of remediation. German-language submissions typically get faster attention. - Wait for review. Response times are typically 24 to 72 hours for well-documented requests. Silence usually means the request lacks technical detail; resubmit with more evidence.
- Verify removal. Re-query with
dig. An empty response confirms delisting. Automatic decay also applies when the observed spam pattern stops for a sustained period.
Prevention: staying off Anonmails
Anonmails prevention follows standard anti-abuse fundamentals with a German-market emphasis:
- Authentication. Publish SPF, DKIM, and DMARC. Anonmails and German receivers weigh authentication heavily.
- Consent hygiene. Double-opt-in for any German recipient. German data protection expectations require explicit consent, and Anonmails maintains traps specifically for lists that skip this step.
- List hygiene. Remove hard bounces immediately, honor unsubscribes within 24 hours, and monitor complaint rates.
- Complaint monitoring. Register with Feedback Loops where available (see the FBL guide) and monitor bounces for regional patterns.
- Regional visibility. Monitor Anonmails alongside Backscatterer, NIX Spam, Schulte, and IX Manitu (eco Alliance) for German market coverage.
Related regional blocklists
| Blocklist | Focus | Impact |
|---|---|---|
| NIX Spam | German community-run, spam trap driven | Widely queried by German SpamAssassin installations |
| Schulte / uceprotect (level 1) | Aggressive, single-IP listings | Common on German SMBs |
| IX Manitu (eco Alliance) | eco association coordinated, industry-focused | Common on hosting-provider mail infrastructure |
| Spamhaus ZEN | Global, SBL + XBL + PBL combined | Not regional but always relevant, see Spamhaus delisting |
Frequently Asked Questions
How do I know if I am listed on Anonmails?
Query with dig +short REVERSED-IP.spam.dnsbl.anonmails.de. A 127.0.0.x response means listed. Empty means not listed. The Anonmails.de website also has a lookup form.
How long does Anonmails delisting take?
Manual delisting requests typically get a response within 24 to 72 hours for well-documented submissions. Automatic decay also applies when the observed spam pattern stops for a sustained period without further reports.
Does Anonmails listing affect Gmail or Outlook delivery?
Not directly. Gmail and Outlook.com do not query Anonmails as a primary signal. However, German ISPs and SpamAssassin-based filters do, so a listing hurts deliverability specifically to German recipients while global providers may be unaffected.
Should I care about Anonmails if I do not send to German recipients?
Only marginally. A listing on Anonmails is a signal your outbound has hit spam traps, which usually correlates with listings on other blocklists too. Fix the root cause regardless of your target market.
Can I use IP rotation to avoid Anonmails?
Rotating IPs to escape a listing without fixing the root cause is treated as evasion. Anonmails and similar regional lists will re-list the new IP quickly if the same spam pattern continues. IP rotation is only effective when the abuse source is contained first.
For the full reference catalog, see the email blocklist directory.
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.
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