Forum Discussion
Sammi
Altocumulus
A long shot, but maybe some useful things here?
In order to have you sendmail command use a different from address you will have to edit the FromLineOverride=YES field in /etc/ssmtp/ssmtp.conf.
https://devcentral.f5.com/s/question/0D51T00006i7c5l/how-to-modify-smtp-fromaddress