Something is corrupt that’s for sure. I can at least change the hostname, I’ll make a mailbox “asterisk”
There is absolutely nothing ever configured to use asterisk@ for the voicemail, and there’s only a few articles I’ve found describing this issue with no resolve.
This was driving me crazy also! First you have to change the Email From String under Voicemail Admin/Settings/Email Config . I think the Server Email is for Paging.
Second are you using the Debug feature of Sysadmin Pro/Email Setup to test? If so it looks like that will always use [email protected] as the from address. However when emailing an actual voicemail the from address shows up correctly