Commonly used ports for SmarterMail

Applies to All Versions of SmarterMail

When configuring a SmarterMail server for the first time, there may be cases where you need to open specific ports on either a network firewall or the Windows Server firewall itself. Listed below are common ports that are used for mail delivery:

  • Port 80 - HTTP traffic and ActiveSync traffic - used to access the web interface of SmarterMail. This would also be the same port used by ActiveSync as well.
  • Port 443 -HTTPS traffic and ActiveSync traffic- used to access the web interface of SmarterMail. This would also be the same port used by ActiveSync as well.
  • Port 25 - SMTP Port - Commonly used for SMTP traffic
  • Port 465 - SSL SMTP Port
  • Port 587 - Submission Port - Commonly used as an alternative port number for SMTP traffic
  • Port 110 - POP Port - Used for POP connections made to the server
  • Port 995 - SSL POP Port.
  • Port 143 - IMAP Port - Used for IMAP connections made to the server
  • Port 993 - SSL IMAP Port.
  • Port 389 - LDAP Port - Used for LDAP connections to the server
  • Port 5222 - XMPP Port - Used for XMPP connections, also known as the chat feature of SmarterMail
  • Port 53 - Domain Name System (DNS) Resolution. NOTE: Port 53 is used for DNS only. If DNS is not run on the SmarterMail server, this port does not need to be open. 
 

NOTE: You may need to configure other ports as well if SSL is being configured for use. When specifying those ports though within the SmarterMail interface, you will be prompted to provide a port number at that time. For more information on the process of configuring SSL - see the article: Configure SSL/TLS to Secure SmarterMail. Furthermore, SmarterMail utilizes TCP connections for all ports, with the exception of port 53 (used for DNS only) which uses UDP.

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