outbound

Hey Kennedy Dzah, Welcome to Sophos Community.

Can you share the snapshot of your configuration? Is this a local Exchange or any other mail server that the UTM is securing? Where do you get this error?

You have not added the Host/Name for this TXT record it appears.

Add Name, TTL and Type TXT in your DNS record.

Example: 

like this?

For Name/Home, Instead of your domain name, you'll have to add the Name specified in the central. Check the snapshot above as well I have highlighted that field.

is this right 

Yes, Seems about right. The test-check should be successful now 

Do i have to wait for a while ?

No, Usually this reflects in about a minute. When I tested with my domain, It reflected in seconds

it still doesnt work

still shows this 

still shows this 

You still have your Domain at the end in the name. There should be no Domain name in the end. Just the Name that was given in central. 

End with '_domainkey'

i see that but the name appears automatically 

even when i delete it doesn't 

Try hitting "Test Record" button a couple of times as I noticed that it is not detecting it right away

ok what is causing this issue 

could it be that i'm not doing something right 

Does it work if you hit test button a couple of times? 

It doesnt 

Dropping you a PM to check further

sure. thanks