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My email is blocked in quarantine, why?
My email is blocked in quarantine, why?
Laona Balhan avatar
Written by Laona Balhan
Updated over a week ago

How to search for an email?

Log in to your Mailinblack space and go to your Protect area.

If an email has not been received, click on the Trace an email icon to find out the reason:

Why is my email blocked?

  • The email is pending

The email is blocked because the authentication request has not yet been fulfilled by the sender.

  • The email is banned

The sender is on the banned list. Emails are therefore systematically blocked (by tracing the email, you will have the ban rule in place).

  • The email is infected

Mailinblack's antivirus has detected suspicious content, potentially infected.

  • The email is classified as spam

Mailinblack's anti-spam processing can classify it as spam for various reasons:

- Blacklisted RBLs: lists that reference IP addresses emitting spam**.**

- Internal SPF (it is probably a spoofing attempt): the email is sent from a domain known by the platform, but coming from outside and whose origin cannot be verified. Indeed the sending IP is not authorized to send emails in the SPF field of the sending domain name. This is considered spoofing.

- External SPF control (SPF have indicated FAIL): if an email is sent via an IP other than those declared in the SPF field, it will be considered illegitimate or as a spoofing email.

For more information on SPF, go to: “My emails are categorized as spam because of SPF, why?”

  • The email is categorized as Spearphishing

Two checks are used to detect this type of email:

- A first check is done during SPF checks on customer protected domains if the SPF returns a fail for an address from a customer's internal domain then the email will be categorized as Spearphishing.

- A second check involves analyzing various information about the sender such as their name and envelope and header addresses in order to detect attempts to deceive the recipient and therefore a potential danger.

For more information on Spearphishing, go to: "How does Mailinblack fight Spearphishing?"

  • The email is classified as spam by the AI

This feature allows for more precise threat classification, thus reducing the risk that spam will slip through the net. If our AI detects an email as spam, it will classify it accordingly.

You can choose whether or not to apply this filtering to your authorized senders via the "Apply the AI filter on emails from authorized senders" setting.


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