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

More Posted time:Nov 11, 2019 17:31 PM
By default Alibaba Cloud Block Out going port 25 . We need to setup smtp relay for it.

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1st Reply#
Posted time:Nov 13, 2019 11:08 AM
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.

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2nd Reply#
Posted time:Nov 17, 2019 5:17 AM
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!