Catch-all mailboxes are being identified by many vendors these days

[necrevistonnezr]

Just a FYI:

I see more and more checks in my mail logs by service providers like helo@gamalogic.com or check@kickboxio.net if my email server has a "catch-all" mailbox.

They send emails either to a random address like 4a47f57a869a0ea0@domain.com or at the same time to such random address and the address you used for e.g. registration on a website.

I have long switched from catch-all mailboxes to aliases with wildcards so the emails mentioned above are rejected; they would get delivered to a catch-all mailbox (and such successful delivery will be monitored).

If you do use catch-all mailboxes and have problems with registration at websites and / or reputation of your mail server, you might want to consider a switch.

[necrevistonnezr]

Update 20240830:

A list of services checking catch-all addresses I noticed in the logs:

• https://emailage.com: a service by LexisNexis: "Use Email Intelligence for Powerful Online Fraud Risk Scoring"
• https://gamalogic.com: "We ensure you collect and send to accurate email addresses which plays an important role in protecting your sender's reputation."
• https://kickbox.com / https://kickboxio.net: "The Kickbox email verification service ensures our customers only collect and send to deliverable and opt-in email addresses."
• https://mailtester.ninja: "MailTester.Ninja is a free and easy-to-use email checker that verifies or finds any address. A leading platform in the realm of email verification and discovery. As an advanced mail tester, we offer comprehensive solutions to ensure the accuracy and deliverability of your emails."
• https://coldlead.io (appears as coldlead.co or coldlead.net in the logs): "ColdLead.io helps professionals find verified B2B emails and connect with decision-makers that matter to your business."
• https://www.usebouncer.com (appears as bouncer.cloud) : "Easiest to use, yet the most powerful email validation platform."
• mon@smtp-monitor.uk (have not been able to find a corresponding website)

[necrevistonnezr]

Update 20240723:

• https://coldlead.io (appears as coldlead.co or coldlead.net in the logs): "ColdLead.io helps professionals find verified B2B emails and connect with decision-makers that matter to your business."

[necrevistonnezr]

Update 20240801:

• https://www.usebouncer.com (appears bouncer.cloud): "Easiest to use, yet the most powerful email validation platform."

[necrevistonnezr]

Update 20240830:

• mon@smtp-monitor.uk (have not been able to find a corresponding website)

[ekevu123]

That is so helpful, thank you! I used a catchall because I relied on it (for convenience, but still). I have now switched to wildcard aliases immediately and set up a catchall I will never look at.

I appreciate the posting!