Get-POPSettings-110

 

Get-IMAPSettings-143

 

 

 

Exchange Network Port References

Exchange Server 2000
Exchange Server 2003
Exchange Server 2007
Exchange Server 2010
Exchange Server 2013
Exchange Server 2016

Understanding Protocols, Ports, and Services in Unified Messaging

Exchange Server 2007
Exchange Server 2010

 

Purpose	Ports
Encrypted web connections are used by the following clients and services: Autodiscover service Exchange ActiveSync Exchange Web Services (EWS) Offline address book (OAB) distribution Outlook Anywhere (RPC over HTTP) Outlook MAPI over HTTP Outlook on the web	443/TCP (HTTPS)
Unencrypted web connections are used by the following clients and services: Internet calendar publishing Outlook on the web (redirect to 443/TCP) Autodiscover (fallback when 443/TCP isn't available)	80/TCP (HTTP)
IMAP4 clients	143/TCP (IMAP), 993/TCP (secure IMAP)
POP3 clients	110/TCP (POP3), 995/TCP (secure POP3)
SMTP clients (authenticated)	587/TCP (authenticated SMTP)
Outbound mail	25/TCP (SMTP)