i want to send email for customers email but show message successful but not send email for yahoo or gmail an other.
my opencart is 2.3.0.2
Secure SSL/TLS Settings (Recommended)
Username:   sales@Max10.com
Password:   Use the email account’s password.
Incoming Server:    23.host.com
IMAP Port: 693 POP3 Port: 695
Outgoing Server:    23.host.com
SMTP Port: 512
IMAP, POP3, and SMTP require authentication.
Non-SSL Settings (NOT Recommended)
Username:   sales@Max10.com
Password:   Use the email account’s password.
Incoming Server:    mail.Max10.com
IMAP Port: 163 POP3 Port: 120
Outgoing Server:    mail.Max10.com
SMTP Port: 25
IMAP, POP3, and SMTP require authentication.
and setting email in admin:
Mail Tab
Mail Protocol
SMTP
Mail Parameters
-fsales@Max10.com or sales@Max10.com
SMTP Host 
mail.Max10.com
SMTP Username 
sales@Max10.com
SMTP Password 
mypass
SMTP Port 
25
SMTP Timeout 
5
New Order Alert Mail
yes
New Account Alert Mail
yes
Additional Alert E-Mails
null