Question
If a file is attached when sending an e-mail to an external destination, the e-mail is automatically encrypted.
Sometimes problems occur with recipients who cannot handle encrypted attachments, or with users of decompression software that cannot be decrypted.
How can I set up an encryption exclusion such that automatic encryption is not performed under certain conditions?
Answer
Users can choose to disable automatic encryption under certain conditions. The following is an example of a common setting.
1. Make an exclusion by filtering the recipient’s Domain/Subdomain/Email Address
This setting can be found at HENNGE Email DLP Admin console [Encryption Policies](※1)
1) Priority： Any ※The encryption policies with the highest priority (lower numbers) will be checked for matching, beginning with the policy with the first matching condition.
2) Sender： If you wish not to specify the sender, set [All]. Or you can specify a sender by setting the corresponding address group. (※2)
3) Recipient： Set the address group of the destination to be excluded from the encryption scheme. (※2)
4) Encryption Type： Set「Don't encrypt」.
(※1)Setting procedure for [Encryption Policies]can be found at「Settings of automatic encryption for attached files」,「2)Define Encryption Policies」.
(※2)Setting procedure for creating an address group can be found at「Setting Procedures of the Filtering Options」,「1) Define the Address Groups」.
2. No encryption if certain keywords are included.
You can configure the settings to exclude encryption if certain keywords are included.
Specify the keyword condition in [Rule Groups] to disable the encryption of attached files. (*1)
1)Attachments：Select [Send unmodified]
2)Target："Subject" "Message body(Including attachments)" "Attachment" can be selected.
3)Predicate： [matches regular expression]
4)Pattern： Configure the keywords you want to specify.（※Please use regular expressions）
5)Count：1
※Other parameters can be set according to your preference.
(※1)Setting procedure for [Encryption Policies]can be found at「Setting Procedures of the Filtering Options」,「2) Define Encryption Policies」.
You will also need to set up [Filters] in order to use the newly created rule group.
Setting procedure for [Filters]can be found at「Setting Procedures of the Filtering Options」,「3) Define Filters」.
3. Do not encrypt if the CC contains a specific address.
Configuration can be made to exclude encryption when a specific address is included in the CC.
Specify the CC address in the [Rule Groups] and set it not to encrypt the attached file. (*1) Specify the CC address and set the setting to disable encryption of the attached file. (※1)
Note: This setting will apply encryption exclusion to all destinations containing the specified CC address if the specified address is included in the CC.
1)Attachments：Select [Send unmodified]
2)Target： Cc:（email address）
3)Predicate：[matches regular expression]
4)Pattern： Set the address to be specified.（※Please use regular expressions）
5)Count：1
※Other parameters can be set according to your preference.
(※1)Setting procedure for [Encryption Policies]can be found at「Setting Procedures of the Filtering Options」,「2) Encryption Policies」.
You will also need to set up [Filters] in order to use the newly created rule group.
Setting procedure for [Filters] can be found at「Setting Procedures of the Filtering Options」,「3) Define Filters」.
If you are uncertain about the settings, or if you are considering other encryption exclusion settings, please contact the HENNGE Customer Success Guide. We will be happy to assist you with the configuration.