Add domain
and IP to whitelist
You
create an IP Allow list or IP Block list by editing the connection filter
policy in the Exchange admin center (EAC). The connection filter policy
settings are applied to inbound messages only.
- In the Exchange admin center
(EAC) (https://outlook.office.com/ecp/) navigate to Protection >
Connection filter, and then double-click the default policy.
- Click the Connection
filtering menu item and then create the lists you want: an IP Allow list,
an IP Block list, or both.
To
create these lists, click Add Icon. In the subsequent dialog box, specify the
IP address or address range, and then click ok. Repeat this process to add
additional addresses. (You can also edit or remove IP addresses after they have
been added.)
- Optionally, select the Enable
safe list check box to prevent missing email from certain well-known
senders. How? Microsoft subscribes to third-party sources of trusted
senders. Using this safe list means that these trusted senders aren’t
mistakenly marked as spam. We recommend selecting this option because it
should reduce the number of false positives (good mail that’s classified
as spam) you receive.
- Click save. A summary of your
default policy settings appears in the right pane.
Please
refer the below link for more details.
To add a domain to whitelist.
- In the Exchange admin center
(EAC) (https://outlook.office.com/ecp/) navigate to Protection >
Spam filter, and then double-click the default policy.
- On the Allow Lists page, you can specify
entries, such as senders or domains, that will always be delivered to the
inbox. Email from these entries is not processed by the spam filter.
- Add trusted senders to the
Sender allow list. Click Add (+),
and then in the selection dialog box, add the sender addresses you wish to
allow. You can separate multiple entries using a semi-colon or a new line.
Click ok to return to the Allow Lists
page.
- Add trusted domains to the
Domain allow list. Click Add (+),
and then in the selection dialog box, add the domains you wish to allow. You
can separate multiple entries using a semi-colon or a new line. Click ok to
return to the Allow Lists page.
Please
refer the below link for more details.
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