How do I change the outgoing port in outlook?
Christopher Anderson
Published Feb 11, 2026
How do I change the outgoing port in outlook?
- In Microsoft Outlook, select Tools > Accounts Settings.
- On the E-mail Accounts Settings Window select the email account that is using the KARTHOST SMTP Outgoing mail server.
- Click the “Change…” icon.
- Click “More Settings”
- Click the Advanced tab.
- Change “Outgoing server (SMTP)” from 25 to ###
- Click OK, Next, and Finish.
How do I change the incoming and outgoing port in outlook?
Click More Settings… On the Internet Email Settings window, select the Advanced tab. Under Server Port Numbers, compare the Incoming server (IMAP) and Outgoing server (SMTP) numbers to those provided by your email provider or from the reference article. If they don’t match, manually change them.
What is the outgoing port for Outlook?
port 587
Overview: Outlook.com Server Settings
| Outlook.com POP3 servers | |
|---|---|
| Incoming mail server | imap-mail.outlook.com |
| Incoming mail server port | 993 (SSL required) |
| Outgoing (SMTP) mail server | smtp-mail.outlook.com |
| Outgoing (SMTP) mail server port | 587 (SSL/TLS required) |
How do I find my SMTP port number in Outlook?
In Outlook, click File. Then navigate to Account Settings > Account Settings. On the Email tab, double-click on the account you want to connect to HubSpot. Below Server Information, you can find your incoming mail server (IMAP) and outgoing mail server (SMTP) names.
How do I find my port number for Outlook 2016?
To find the port numbers of a POP3 or IMAP email account in Outlook, please do as follows:
- Click File > Info >Account Settings > Account Settings.
- In the Account Settings dialog box, please select the specified email account whose port numbers you will find under the Email tab, and click the Change button.
How do I find my outgoing SMTP server?
Click “Tools,” then “Accounts,” then “Mail” if you are using the popular Outlook Express program for your email. Select the “Default” account, and choose “Properties” from the menu. Choose the “Server” tab and choose “Outgoing Mail.” This is the name of your SMTP server.
How do I change my SMTP port number?
Start Windows Mail, click the Tools menu at the top of the window and then click Accounts. Select your account under Mail, and then click on the Properties button. Go to the Advanced tab, under Outgoing server (SMTP), change port 25 to 587. Click the OK button to save the changes.
Is port 587 TLS or SSL?
Port 587: This is the default mail submission port. When users submit an email to be routed by a proper mail server, this is the one that will provide best results. Port 587, coupled with TLS encryption, ensures that email is submitted securely and following the guidelines set out by the IETF.
What is the port 143?
IMAP
Well-known ports
| Port | TCP | Description |
|---|---|---|
| 138 | Assigned | NetBIOS Datagram Service |
| 139 | Yes | NetBIOS Session Service |
| 143 | Yes | Internet Message Access Protocol (IMAP), management of electronic mail messages on a server |
| 152 | Yes | Background File Transfer Program (BFTP) |
How do I change my SMTP server in Outlook 365?
Select the email account from the list and click Change. On the Change E-mail Settings window, click More Settings. Click the Outgoing Server tab and check the My outgoing server (SMTP) requires authentication option. Click the Advanced tab and change the Outgoing server (SMTP) port.
How do I find my SMTP port number?
In most cases, SMTP is assigned to port 25 in the network’s Exchange server….How to Find an SMTP Port Number
- Log in to the Exchange System Manager in your mail server.
- Click “Servername.”
- Click “Protocols.”
- Click “SMTP.”
How do I change the port number for Outlook 2016?
Find and select Accounts and Social Network Settings, then select the Account Settings option. Step 3. Highlight the corresponding account you want to make changes to the outgoing port for and click the Change box.
How do I change the outgoing mail port from 25 to 2864?
To change the outgoing mail port from 25 to 2864: In Outlook, drop down the Tools menu. Choose Accounts or Email Accounts. View or change existing e-mail accounts should be marked. Click Next. Select the account and click Change. Select More Settings. In Outlook Express, drop down the Tools menu.
How do I change the SMTP port for my email account?
Select the email account to modify under accounts . Beneath Outgoing server (SMTP) click on the drop down bar and select “Edit SMTP server list…”. Click on your desired Outgoing server and then click advanced. Select option for custom port and type in 2864.
How to find the SMTP port number in Outlook 2013?
Step 1: Open Outlook 2013. Step 2: Click the File tab at the top-left corner of the window. Step 3: Click the Account Settings button at the center of the window, then click the Account Settings drop-down option. Step 4: Select the account for which you want to find the SMTP port number, then click the Change button.
How do I change the outgoing SMTP port number in Thunderbird?
To change the outgoing mail port from 25 to 2864: Launch the Thunderbird mail client Drop down the Edit menu, and choose Account Settings Click Outgoing Server (SMTP) On the right hand side select the server to modify and click Edit Change the port number from 25 to 2864 Click OK Restart Thunderbird
