Has Merchant Email Receipt Auto Reply domain name changed?

[pradeep82]

Has domain name for the Merchant Email Receipt changed from 

noreply@mail.authorize.net to 

noreply@mail.testauthorize.net?

All the emails are getting blocked by Mimecast due to this new domain.
Can someone please confirm if this is correct?

 

[pradeep82]

Here is the screen shot of the email.

[pradeep82]

I got the confirmation that this is a change in the authorizenet test sandbox account. 

Merchant Email Receipt email is changed from 

noreply@mail.authorize.net to 
noreply@mail.testauthorize.net?

noreply@mail.testauthorize.net?