phpbb3 smtp constant errors

phpbb3 smtp constant errors

Hi,
I am setting a phpbb3 forum, and I would like to use zoho smtp for emails.
My settings in phpbb3 are :

Use SMTP server for email: Yes
SMTP server address: ssl://smtp.zoho.com
SMTP server port: 465
Authentication method for SMTP: LOGIN
SMTP username: username for my zoho mail like user@domail.com
SMTP password: Application-specific Password (generated in advance and tested with Thunderbird)

When I try to test the email settings there is no mail sent:

This is phpbb3 error log:


>
>
> Ran into problems sending email at Line 1579. Response: 535 Authentication Failed
> .Backtrace
> Connecting to ssl://smtp.zoho.com:465
> LINE: 1096 <- 220 mx.zohomail.com SMTP Server ready June 1, 2017 6:42:19 AM PDT
>
> # EHLO xxxxxxxxxxxx
> LINE: 1443 <- 250-mx.zohomail.com Hello xxxxxxxxxxxxx (xxxxxxxxxxxx (xx.xx.xx.xx))
>
> LINE: 1443 <- 250-AUTH LOGIN PLAIN
>
> LINE: 1443 <- 250 SIZE 53477376
>
> # AUTH LOGIN
> LINE: 1567 <- 334 VXNlcm5hbWU6
>
> # Omitting sensitive information
> LINE: 1573 <- 334 UGFzc3dvcmQ6
>
> # Omitting sensitive information
> LINE: 1579 <- 535 Authentication Failed
>
>