Cloudmark Lookup During List Import Referencing Removed IP

liquidfuse

New Member
Hello,

I'm trying to track down where MailWizz may still be caching or referencing an old sending IP address that is no longer configured anywhere in my current setup.

The issue specifically happens during list imports.

When importing a new list, MailWizz appears to still perform Cloudmark-related checks against an old IP address that is no longer active or assigned to any current delivery server.

Example message/log reference:
"Cloudmark Sender Intelligence lookup/check for IP 159.183.67.23"

That IP is no longer being used anywhere in my active configuration. Also, when I check cloudmark, it's noit listed anymore.
1778699004245.png

Background:

  • The IP was previously used in an older sending configuration.
  • It has since been completely removed from active use.
  • The IP is no longer attached to any delivery server, bounce server, or sending domain.
  • Despite this, Cloudmark-related checks during imports still seem tied to that old IP.
What I've already checked:

  • Delivery servers
  • Bounce servers
  • Sending domains
  • Tracking domains
  • Cron jobs
  • General MailWizz settings
I also searched portions of the database manually and still found some historical references tied to old records/logs.

My questions are:

  1. Does MailWizz cache Cloudmark or blacklist-related IP data internally?
  2. During list imports, where does MailWizz determine which IP to use for Cloudmark/reputation checks?
  3. Are there specific database tables, cache directories, queue tables, or import-related logs that could continue referencing a removed IP?
  4. Is there a recommended cleanup process for fully removing legacy IP references from MailWizz?
I'm mainly trying to determine where this old IP could still be stored or referenced during the import validation/import process.

Any guidance would be appreciated.
 
Does MailWizz cache Cloudmark or blacklist-related IP data internally?
we do not do this

During list imports, where does MailWizz determine which IP to use for Cloudmark/reputation checks?
it does not, we do not offer this type of functionality. Maybe you're using an extension that does?
Are there specific database tables, cache directories, queue tables, or import-related logs that could continue referencing a removed IP?
I don't think so, we don't keep such data afaik.

If you're using some sort of email verification extension, maybe that is the problem, try to disable it in case you have it and see the result.
 
See screenshot, this is the issue I have. It runs this check everytime I import subcribers into a new list. However, that IP that I have listed, I havent used in 2 years and its not listed on cloudmark anymore. Screenshot 2026-05-14 125340.png
 
Ah, now I see what you mean. That comes from the global blacklist, see backend > email blacklist. Blacklisted emails are not to be imported. You need to remove those emails from the blacklist first.
I got confused because you said IP addresses.
 
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