The receiver's mailbox is yahoo. Click "test inbox" and prompt test fails.
1. The security level of mailbox is too high.
Solution:
Go to your mail account and turn on "less secure sign-in".
A.6.6 Mail Configuration
Mail Type
Gmail
Outlook
Hotmail
QQ
Yahoo
126
Sina
Note
About mail configuration:
SMTP port
•
Defualt to use port 25 without encryption, or using port 465 if SSL/TLS is used.
Port 587 is mainly used for STARTTLS protocol mode.
The STARTTLS protocol mode that is usually used by default when selecting
TLS.
User name
•
User name of Outlook and Hotmail require full names, and other email
require a prefix before @.
AX Security Control Panel User Manual
Table A-1 Mail Configuration
Mail Server
smtp.gmail.com
smtp.office365.co
m
smtp.office365.co
m
smtp.qq.com
smtp.mail.yahoo.c
om
smtp.126.com
smtp.sina.com
SMTP Port
587
587
587
587
587
465
25/465/587
90
Protocols
Supported
TLS/STARTTLS (TLS)
STARTTLS (TLS)
STARTTLS (TLS)
STARTTLS (TLSv1.2)
STARTTLS (TLSv1.2)
SSL/TLS
SSL/TLS/STARTTLS
(SSL/TLS)