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What ports need to be open for Exchange 2013?

Author

Michael Hansen

Published Jul 14, 2026

What ports need to be open for Exchange 2013?

Network ports required for clients and services

PurposePorts
IMAP4 clients143/TCP (IMAP), 993/TCP (secure IMAP)
POP3 clients110/TCP (POP3), 995/TCP (secure POP3)
SMTP clients (authenticated)587/TCP (authenticated SMTP)

How do I change my SMTP port for Exchange 2016?

Locate and click Servername, click Protocols, and then click SMTP. Right-click the Default SMTP Virtual Server object, and then click Properties. On the General tab, click the Advanced button, click the Edit button, and then set the Transmission Control Protocol (TCP) port to 2500 (or whatever new value you require).

What does exchange port 443 do?

HTTP TCP 80 Hyper-Text Transfer Protocol is the protocol used primarily by Microsoft Outlook Web Access (OWA) HTTP/SSL TCP 443 HTTPS over SSL SMTP TCP 25 Simple Mail Transfer Protocol (SMTP) is the foundation for all e-mail transport in Exchange.

What port number does Exchange use?

TCP port 102 is the port that the Exchange message transfer agent (MTA) uses to communicate with other X. 400-capable MTAs.

How do I find my SMTP server for Exchange 2013?

How to find the SMTP Mail Server for an Email Address

  1. Open a DOS Command Prompt.
  2. Type “nslookup”.
  3. Your computer’s DNS Server name and IP address will be displayed.
  4. Type “set type=mx” – This will cause NSLOOKUP to only return what are known as MX (Mail eXchange) records from the DNS servers.

How do I find my SMTP server in Exchange 2013?

Setup SMTP Auth in Microsoft Exchange 2013 Print

  1. Click on the Send Connectors menu option.
  2. Click on the “+” icon. A new window will open.
  3. Next add the add the smart host’s address or smtp server/host name (i.e. smtp.yourdomain.com)

How do I open port 25?

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

Does Exchange need port 80?

You have to use RPC/HTTPS aka Exchange Anywhere, you’ll only have to open the 80 and/or 443 ports according to your IIS setup. For using HTTPS you’ll have to deploy the server and CA certificates to your clients. Hope this helps.

Does exchange use port 80?

However, you may find that some services must be configured to use unencrypted web connections on 80/TCP to the Client Access services on Mailbox servers. IMAP4 is disabled by default. For more information, see POP3 and IMAP4 in Exchange Server. POP3 is disabled by default.

How to change Exchange Server 2013 send connector port number?

To change Exchange Server 2013 or 2010 Send Connector port number we need to use the Exchange Management Shell. Before you start note the current port configuration by typing the cmdlet below in EMS: Get-sendconnector Name | fl. The default port is 25. To change the default port number type the cmdlet below:

How do I change the SMTP listening port on Exchange 2003?

To change the SMTP listening port on a server that is running Exchange 2000 or Exchange 2003 from port 25 to another port, for example, port 2500, follow these steps: Start the Exchange System Manager. Locate and click Servername, click Protocols, and then click SMTP. Right-click the Default SMTP Virtual Server object, and then click Properties.

Where can I get help configuring or troubleshooting exchange 2013?

If you have questions specifically about configuring or troubleshooting Exchange 2013 please use the Official Microsoft Exchange 2013 Documentation – due to the complexities of Microsoft Exchange we can only provide basic troubleshooting advice.

Where does mail from an exchange 2013 edge Transport Server first arrive?

If the Mailbox server and the Client Access server are installed on the same computer, mail from an Exchange 2013 Edge Transport server first arrives on the computer at the Front End Transport service (the Client Access server role) before it flows to the Transport service (the Mailbox server role).