I need help setting up SMTP on phpBB (which I installed through cPanel) so I, as webmaster, and the registered users, can get email notifications.
For phpBB's email options, I've set the SMTP server to localhost and the port to 25 as specified in this message. However, my emails aren't being sent, and when I view the error log, I see this:
Connecting to localhost:25
LINE: 1205 <- 220-a2plcpnl0376.prod.iad2.secureserver.net ESMTP Exim 4.92 #2 Sun, 14 Jul 2019 23:22:30 -0700
LINE: 1205 <- 220-We do not authorize the use of this system to transport unsolicited,
LINE: 1205 <- 220 and/or bulk e-mail.