How to disable outbound email (restrict to organization domain only)

[Lord Omicron]

Doing some work in our dev instance. Would like to enable email but we don't want emails to go to destinations other than the company's domain. The mail options allow you to route all emails to one address which works but is not ideal because that user has to continually forward emails to the intended internal recipient. My guess right now is that we'd have to contact HI Support to do so? I'm hoping there's a way to do this without contacting support. Thanks.

[Andrew_TND]

It would be a laborious task depending on how many notifications you've got but you could just add a condition into the notifications for it to only send if... Assuming your caller field is 'Caller'

caller.email - Contains = yourdomain.com

Mark as helpful/correct answer if this is right.

[Lord Omicron]

Maybe this could be a plan C option. 😉

[Venkatesh A K1 · Accepted solution]

After Paris Release "System Address Filter" has been introduced which will help in making the domains whitelist OR block based on outbound OR inbound .

Steps as follows ::

1. Create a Email address filter ( System mailbox --> Email address filters)
2. you can mention the domains which can be allow OR deny .

Then 

3. Create a system address filter ( System mailbox --> system address filter )

4. Select Type Inbound OR Outbound 

5. add the Email address filter which you have created in above steps and submit.

Both types of filtering can be enabled which you have configured via email address:

• Allow (or whitelist) 
• Deny (or blacklist) 

SN Doc is FYI :: 

https://docs.servicenow.com/bundle/paris-platform administration/page/administer/notification/concept/system-address-filters.html

Mark as helpful/correct if it is correct.