Exchange Port

Get-POPSettings-110

Get-IMAPSettings-143

Exchange Network Port References

Exchange Server 2000	http://support.microsoft.com/kb/278339/
Exchange Server 2003	http://technet.microsoft.com/en-us/library/bb124075(v=exchg.65).aspx
Exchange Server 2007	http://technet.microsoft.com/en-us/library/bb331973(v=exchg.80).aspx
Exchange Server 2010	http://technet.microsoft.com/en-us/library/bb331973(v=exchg.142).aspx
Exchange Server 2013	https://technet.microsoft.com/library/bb331973(v=exchg.150).aspx
Exchange Server 2016	https://technet.microsoft.com/en-us/library/bb331973(v=exchg.160).aspx

Understanding Protocols, Ports, and Services in Unified Messaging

Exchange Server 2007	http://technet.microsoft.com/en-us/library/aa998265(v=exchg.80).aspx
Exchange Server 2010	http://technet.microsoft.com/en-us/library/aa998265(v=exchg.141).aspx

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)