Why IPs typically get listed
Most DNSBL listings, including this one, follow a few common patterns.
A high volume of spam complaints from recipients is one common trigger.
A compromised server sending spam without the owner's knowledge is another frequent cause.
Hitting a spam trap, an email address set up specifically to catch spammers, can trigger a listing fast.
Missing or misconfigured authentication records, like SPF, DKIM, or DMARC, also raise your risk.
For the URI list specifically, the trigger is usually a domain or link showing up in spam content, not the sending IP.
Public information on Swinog's exact listing thresholds is limited, so treat these as the general causes that apply to most DNSBLs.
How to check if you're listed
Use a multi-blacklist lookup tool that includes both dnsbl.swinog.ch and uribl.swinog.ch in its check list.
You can also query each zone manually using a DNS lookup tool if you're comfortable with reverse IP or domain queries against a DNSBL zone.
Check both zones separately, since your IP could be clean on one and listed on the other.
If your mail server logs show bounces mentioning Swinog by name, that is a strong sign you're listed.
How to get removed
Removal generally works the same way across both Swinog zones, with a few differences.
First, confirm the exact listing using a lookup tool, and note which zone flagged you.
Second, find and fix the root cause before requesting removal.
For dnsbl.swinog.ch, that usually means securing the sending server, stopping any outbound spam, and correcting SPF, DKIM, or DMARC records.
For uribl.swinog.ch, that means removing or securing the flagged domain or link, since the issue is content-based, not server-based.
Third, contact Swinog through whatever delisting or contact channel it currently provides on its own site.
Because portal URLs and forms for smaller DNSBL operators can change without notice, verify the current contact method directly on Swinog's site rather than relying on an old link.
Fourth, be specific in your request. Include the listed IP or domain, and a short note on what you fixed.
If one zone lists you and not the other, only request removal for the zone that actually flagged you.
How long it typically takes
Processing time for smaller, community-run DNSBLs like this one varies more than it does for large commercial blacklists.
Some operators review requests within a day or two, others take longer if review is manual.
There is no confirmed published turnaround time for Swinog specifically, so build in some buffer.
If your fix was genuine and your request was specific, most legitimate DNSBL removals clear within a few business days.
Try our Blacklist Monitoring tool for free today.
FAQ
How do I do a swinog blacklist check?
Run your mail server's IP through a lookup tool that checks dnsbl.swinog.ch. Separately, check any domains used in your emails against uribl.swinog.ch. These are two different zones, so a clean result on one does not confirm the other. Bounce messages referencing Swinog by name are also a reliable sign you're listed.
How do I remove an IP from Swinog?
First confirm which zone listed you, dnsbl.swinog.ch or uribl.swinog.ch. Fix the underlying cause, whether that's a compromised server, missing authentication, or a flagged domain. Then submit a removal request through Swinog's own contact channel, including your IP or domain and what you fixed. Requesting removal before fixing the cause usually just leads to a second listing.
Will fixing the problem automatically remove me from the list?
No, fixing the cause does not automatically trigger delisting on most DNSBLs. You generally still need to submit a removal request. Some automated lists do expire entries over time, but manual requests are the more reliable path.
Can one email server get listed on both Swinog zones at once?
Yes, that can happen if your server both sends spam directly and hosts or forwards messages containing flagged links. In that case, you need to address both causes separately. A single fix rarely resolves both listings at once. Check both zones after any fix to confirm each is cleared.
Does a Swinog listing affect all my recipients?
It depends on which mail providers use Swinog's lists as part of their filtering. Not every provider checks every DNSBL, so impact varies. If your bounce messages specifically mention Swinog, the providers you're emailing are checking it. Widespread bounces across many providers usually point to a bigger, separate issue.
