Software
One of my user access exchange remotely
the problem is that his client has a firewall. He need to know what ports
exchange use so that they can open that for me. Which file do I check on NT server 4.0
to find this out?
Straight from an Exchange Techmail:
PORTS USED BY EXCHANGE
If you need for Exchange to communicate through a firewall, it's
important to understand the TCP/IP ports it uses. Here's the rundown:
* Port 25 is used for SMTP support.
* Port 53is used for DNS.
* Port 102 is used for MTA and X.400 communication.
* Port 110 is the POP3 client listening port.
* Port 119 is the NNTP protocol port.
* Port 135 is used by the RPC Service locator.
* Port 137 is used for WINS.
* Port 138 is used by the NetBios datagram service.
* Port 139 is used by the NetBios session service.
* Port 143 is the IMAP Server Listen Port.
* Port 389 is the SDAP listen port.
* Port 636 is the secure LDAP SSL port.
* Port 993 is the secure IMAP SSL port.
* Port 995 is the secure POP3 SSL port.
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by cong
What client/protocol is the user using?
If the user wants to remotely use Outlook/MAPI you also have ports for the information store and directory service. These ports are dynamically assigned by default. If you wish to allow the remote user Outlook access (which I do NOT recommend) through the firewall you would need to fix these ports and have them opened also.
The MS knowledgebase article for this is 148732:
http://support.microsoft.com/support/kb/articles/Q148/7/32.asp
If the user is trying to use IMAP or POP you want ports 143 or 110 as post #1 states.
by cong
by cong
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