Spam Filter in the Exchange Admin Center

The purpose of this blog post is to provide the guidance and the steps needed to Allow or Block an email address or domain in the Exchange Admin Center.

To begin, please log into your Microsoft Office Portal with your Office365 credentials.

Sign-In Page - 1

Once you have successfully logged into the Office portal for your organization, please select the Admin Center from the choices found below.

Office 365 Portal - 2

On the following page, please select Show All to expand the list of available Admin Centers.

MS 365 Admin Center -3

Select Exchange from the choices listed below to open the Exchange Admin Center.

Exchange Admin Center - 4

Select Protection in the Exchange Admin Center and then Spam Filter.

Exchange Admin Center - 5

Double click Default and a pop-up window should launch.

Exchange Admin Center - 6

If you are interested in blocking an email address or domain, please select Block Lists (Red arrow).

If you are interested in allowing an email address or domain, please select Allow Lists (Green arrow).

Exchange Admin Center - 7

Under Block Lists, you have two options (Blocked Sender or Blocked Domain) to choose from. To block an email address (aka Blocked Sender), please click on the + sign above Blocked Sender, enter the sender address, and then select OK. In order to block a domain, please click on the + sign above Blocked Domain, enter the domain, and then select OK.

Exchange Admin Center - 8

Exchange Admin Center - 9

Under Allow Lists, you have two options (Allowed Sender or Allowed Domain) to choose from. To allow an email address (aka Allowed Sender), please click on the + sign above Allowed Sender, enter the sender address, and then select OK. In order to allow a domain, please click on the + sign above Allowed Domain, enter the domain, and then select OK.

Exchange Admin Center - 10

Exchange Admin Center - 11

Once the changes (Block or Allow) have been added, please click on Save to confirm them.

Exchange Admin Center - 12

If I have missed anything or if you have any suggestions, please let me know.

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