Updated on May 12, 2021 : Administrators can now remove some restrictions on HENNGE Email DLP Admin Console.
What is "Restricted Senders" menu?
To keep the systems stable, the HENNGE Email DLP service has two types of sending limits, which are "Rate-limiting" and "Blacklisting". Regarding the "Blacklisting", administrators can check which users are restricted by the limits on the "Restricted Senders" menu of the HENNGE Email DLP Admin Console. Administrators can also remove some restrictions via the menu, but before it is removed, the sender must ensure that unsolicited emails which have caused restrictions to be applied will no longer be sent. To remove a restriction, please click on the "X" button on the right side of the list. If you see the "⚠️" icon, please contact a HENNGE Customer Success Guide to remove the restriction. (You can use the contact form by clicking the "?" icon at the upper left corner)
Reference：Email sending limits on HENNGE Email DLP service
Information displayed in each section
The following information is displayed in each section.
・Email address
Email addresses of restricted users by the blacklisting.
・Reason
1. "A high volume of bounced emails were detected from this sender over a short period of time."
This message is shown when our system detects a high volume of bounced emails over a short period of time.
(This message corresponds to the limit [2. Blacklisting] > [2.1] on the "Email sending limits on HENNGE Email DLP service" article.)
->System administrators can manually remove this restriction. * The restriction can be manually removed via the admin console once per 24 hours per sender email address.
2. "A persistently high volume of bounced emails have been detected from this sender."
This message is shown when our system detects a persistently high volume of bounced emails.
（This message corresponds to the limit [2. Blacklisting] > [2.2] on the "Email sending limits on HENNGE Email DLP service" article.）
->System administrators can manually remove this restriction. * The restriction can be manually removed via the admin console once per 24 hours per sender email address.
3. "Our system detected an unusual rate of unsolicited emails from this sender."
This message is shown when our system detects an unusual rate of unsolicited emails. In addition, for the users restricted by the reason 2. above before December 3 2020, this message is also shown.
（This message corresponds to the limit [2. Blacklisting] > [2.2] or [2.3] on the "Email sending limits on HENNGE Email DLP service" article.）
-> To remove this restriction, please contact a HENNGE Customer Success Guide.
4. "Action has repeatedly been taken against this sender for sending unsolicited emails, but the issue was not solved."
This restriction applies when a sender has repeatedly been restricted within a certain period of time.
（This message corresponds to the limit [2. Blacklisting] > [2.2] or [2.4] on the "Email sending limits on HENNGE Email DLP service" article.）
-> To remove this restriction, please contact a HENNGE Customer Success Guide.
・Effect on email
Always "Bounced" is displayed. Users are required to re-send emails which were sent during the blacklisting restriction.
・Start-End
The "Start" date/time indicates when the blacklisting started to be applied. In a case of the auto-delist restriction, the "End" date/time indicates when the user will be auto-delisted from the blacklisting.