I have the exact same problem on phpBB 3.1.2: no new user activaction notification to the administrator.
I have this new version on a big forum I manage since 5 years with no problems: I always had manual activation of users by admin (me) and I always received notification emails at same mail address.
After installing 3.1.2 from 2.x (no upgrade, fresh install and porting of data) I only see notification on board, no more e-mails
I use my own smtp mail server, so I can see from postfix logs that when a new user is registered, mail server sends a message to the new user, but no message is sent to me (my address is email@example.com
, where xxx.yyy is the same domain of the forum board ).
All other e-mail messages starting from forum are correctly sent both to general forum address and my personal address, so no smtp problems (I use local smtp server on same server: localhost:25 and it works great for any other email from forum.
It seems to miss only the notification for administrator!
I double checked in APM all settings (I have my own language installed so the english translation may not to be perfect):
Board can send email: yes
Contact email: firstname.lastname@example.org
Return e-mail: email@example.com
SMTP server: yes
Server name: localhost
Server port: 25
Account Activation: Administrator
Notification for administrator user: both notify and email.
TY in advance