Mở port 25 windows 10

Download Article

Port 25 is the port that is used to send email. Ports can be opened and closed on your computer for security reasons, so if port 25 is closed, you will not be able to send email. If are having a hard time sending email and need to open port 25, follow these steps.

1. 1

   Click the "Start" button and choose "Control Panel." Click "Windows Firewall" and then click the tab titled "Exceptions."

2. 2

   Choose "Add Port." In the text box marked "Name," enter the name of your email server. Type the number "25" in the text box named "Port."

   Advertisement

3. 3

   Finish the process by clicking "Apply" and then clicking "OK."

Advertisement

1. 1

   Click the "Start" button and choose "Control Panel." Click "Windows Firewall" and then click "Advanced Settings."

2. 2

   Look at the options on the left sidebar and right click on "Inbound Rules." Under the "Actions" heading on the right sidebar, click "New Rule."

3. 3

   Find the radio button next to the "Port" option on the window entitled "Rule Type." Click the radio button and choose "Next."

4. 4

   Select the radio buttons for "TCP" and "Specific local ports." Enter the number "25" in the text box and click the "Next" button.

5. 5

   Choose the action the network should take when a program tries to access port 25. Choose "Allow the connection" to allow any connection, or choose "Allow the connection if it is secure" to allow only authenticated connections. Click "Next."

6. 6

   Check the boxes for the types of connections you would like to be able to access Port 25. "Domain," "Private" and "Public" are all checked by default. Uncheck boxes if you want to and then click "Next."

7. 7

   Type a name for the rule, such as "Open Port 25" into the text box marked "Name." This is so you can find the rule in the list of rules on the "Inbound Rules" list if you want to edit it later. Click the "Finish" button.

Advertisement

Add New Question

• Question

  How do I open port 25 on a macOSX?

  Run an email server, and open it in any firewalls. Go into your cable modem/dsl modem and find 'NAT' which is Network Address Translation, and set it up to forward port 25 externally to port 25 internally to the IP address of your computer.

Ask a Question

200 characters left

Include your email address to get a message when this question is answered.

Submit

Advertisement

Video

• Many Internet service providers block port 25 and routes sent emails through another port for security. Many spam emails are sent out is mass quantities through port 25 via programs and bots. Internet service providers combat this by blocking port 25 for all of their users. When shopping for an Internet service provider, you will need to ask if the provider blocks port 25. Most large Internet Service Providers block port 25, so it may be best to find a smaller local company from which to get your Internet service.

• To test if port 25 is open or closed, click the "Start" button and type "ipconfig." Type "telnet mail.domain.com 25," substituting your Internet Service provider's domain name for "domain" and hit the Enter key. If port 25 is closed, you will see a connection error.

Thanks for submitting a tip for review!

Advertisement

About This Article

Thanks to all authors for creating a page that has been read 300,608 times.

Is this article up to date?