Vultr tutorial on opening SMTP port 25, which can be used for email sending

Port 25 is open to SMTP (Simple Mail Transfer Protocol) hosts and is mainly used to send emails. Most email hosts now use this protocol. Vultr port 25 is now closed by default. We need to send a work order to customer service to apply for opening port 25 to enable the Vultr SMTP service. This article shares the application tutorial.

1. Vultr 25 port opening tutorial

Step 1. Send a work order to open Vultr 25 port to Vultr customer service

The content of the work order can be as follows:

Hi,

Please help me open my 25 port. I need SMTP service in my website.

Many thanks

Step 2: Provide detailed reasons for opening the Vultr SMTP port

Vultr will then need you to provide additional information, including:

Just fill in the website first, and then talk about the purpose and the number of messages sent every day (to prevent SMTP from being abused).

Step 3: Restart Vultr VPS and enable SMTP port

If there are no accidents, Vultr customer service will help you open port 25. On the VPS page, we can see that we need to restart Vultr VPS to enable the settings: "Unblocking the SMTP port is pending, please restart this instance via the control panel to apply the change.":

Just restart Vultr VPS in the background (you must restart here, reboot will not work):

2. How to check whether the Vultr 25 port is open

Use the following command to check whether port 25 of Vultr VPS is successfully opened:

At this point, your Vultr will have no problem sending emails, but it will definitely not work for sending mass spam emails. Ordinary blog registration notifications and reply notifications will have no problem.

More Vultr VPS tutorials and Vultr discount collection: "Vultr VPS special topic: Vultr discount code collection, speed test address sharing, data center recommendation"

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