Mailbox blocked daily

Hi AtanasM,

To avoid the blocking of the mailbox you can try to whitelist the mailbox:

o whitelist the mailbox and ensure that messages from its email address are trusted by the security system, you can take the following specific steps in Microsoft Exchange:

1. Access Exchange Admin Center (EAC):

   • Sign in to your Microsoft Exchange Admin Center (https://admin.exchange.microsoft.com) using your admin credentials.

2. Navigate to "Mail Flow":

   • In the EAC, go to "Mail Flow" from the left-hand navigation menu.

3. Select "Rules":

   • Click on the "Rules" tab under "Mail Flow."

4. Create a New Rule:

   • Click on the "+" icon or "Add" button to create a new rule.

5. Name the Rule:

   • Give the rule a descriptive name, such as "Whitelist Mailbox"
     
     

      

6. Configure the Rule Conditions:

   • In the "Apply this rule if..." section, set the conditions to match messages from the specific email address of the mailbox you want to whitelist.
   • For example, choose "The sender is..." and enter the email address of the mailbox in question.

7. Set the Action:

   • In the "Do the following..." section, choose the action to be taken when the conditions are met.
   • Select "Modify the message properties" and then "Set the spam confidence level (SCL) to..." Set it to the lowest value, which indicates the message is not spam (e.g., -1).
     
     

      

8. Save the Rule:

   • Click "Save" to save the new rule.