Can you pass topic to resoled (link in first post)
Finally got it worked.
Piwigo uses the webadmin's email id to send emails to the admin;s email id.
I didn't have an admin account created.
Once I created an admin account, all is good.
Hope this helps someone else too.
Recently i have migrated my Piwigo directory to FreeBSD server.
Now when a user uploaded a photo I received an email to the email I set for admin, but the from address is also the same i.e. the admin email.
How can I change this?