DNN SMTP Sending on Behalf Configuration
When sending emails from your site. The From field has something similar to DNN Corp <email@example.com> On Behalf Of firstname.lastname@example.org and you wish to remove or rename the DNN Corp field.
We have been seeing this on DNN 9.x sites due to DNN going to the PersonaBar Control Panel and removing access to certain fields in the Host Settings section.
Access your DNN site's database
and change the HostTitle attribute in the HostSettings table to what you want it to say or leave it blank. You may also want to update the HostURL and HostEmail if they are not accurate.