Anyone can help to which smtp server can be using on Alibaba Clound

Anyone can help to which smtp server can be using on Alibaba Clound
like google / outside smtp service ? ??

Please provide more details.

Are you inside China or outside China?

Do you only need SMTP to send emails or do you need a full email server?

Do you already have email setup for your domain name?

1) If you only need to send emails, take a look at Alibaba DirectMail.

2) If you are outside China, you can use any service you want such as Google, Office 365, etc.

if you use debian or ubuntu, you can install postfix.
Postfix is very light and powerful utility for mail service.

You can install like below

console > sudo apt-get install mailutils

The most efficient way to install Postfix and other programs needed for testing email on Ubuntu, is to install the mailutils package by typing:
sudo apt-get install mailutils


we can install Postfix on CentOS by enter the following command to do so.
yum -y install postfix

My views are little different then using the postfix. As a best practice you should not use the web server and email services from the same server.

For the transactional emails you can use the services like sendgrid or sendinblue. The services are not expensive and definitely comes with free credits. This way you will prevent your server from getting blocked.

If in case you need to use the email and web server from the same server, make sure to limit the usage of your SMTP port from the limited number of IP addresses.