PHPBB 3.2.0-RC1 is unable to authenticate against a SMTP Server when trying to send emails.
- Configure Login Authentication
- Try to authenticate by sending a testmail - in my case Exchange 2013.
Exchange shows the following diag in receive connector logs -
2016-10-02T10:40:22.036Z,MBX2\Application Frontend MBX2,08D3E2E35D3EA2C9,18,10.1.1.38:25,10.1.1.53:33590,*,,User Name: email@example.com
2016-10-02T10:40:22.036Z,MBX2\Application Frontend MBX2,08D3E2E35D3EA2C9,19,10.1.1.38:25,10.1.1.53:33590,*,Tarpit for '0.00:00:05' due to '535 5.7.3 Authentication unsuccessful',
2016-10-02T10:40:27.048Z,MBX2\Application Frontend MBX2,08D3E2E35D3EA2C9,20,10.1.1.38:25,10.1.1.53:33590,>,535 5.7.3 Authentication unsuccessful,
Sniffering in Wireshark shows that instead of sending the correct password to the server, only a collection of "*" (asterisk) is sent. See below
Username and PWD are base64 encoded, so lets decode that -
bm9yZXBseUBoaWhvc29mdC5hdA== -> firstname.lastname@example.org
KioqKioqKio= -> ********
It seems that we pass a wrong value to whichever component is trying to authenticate, therefore failing auth.