I'm running Magento CE 2.2.4.
When the system sends any emails, they send as the webserver's hostname. I'm not sure where/what handles sending emails, but it seems its missing the from address.
I have contacts setup under Store Email Addresses, but they seem to be ignored.
Any help would be massively appreciated.
Best Answer
Sales emails are sent from a strange email #15458
Possible fix:
https://github.com/magento/magento2/pull/15119
https://github.com/magento/magento2/issues/14952