X Block or Permit Sender in Mimecast

Follow these Steps when you need to add an email address or domain to a white-list or blacklist.

Step-by-step guide

1. Log into the customer's administrator portal (Credentials in SS)
   1. https://login-us.mimecast.com/u/login/?gta=administration#/login
2. Select Services > Directories > Profile Groups
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3. To add to a blacklist, select Blocked Senders. To add to a whitelist, select Permitted Senders.
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4. Select Build and then select either Add Email Addresses or Add Email Domains depending on what needs whitelisted or blacklisted.
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5. Add in your addresses & domains (One per line) and then select Save and Exit.
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