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thanks, I have managed to convince them to see things your way.
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Hi, i have a request from the firewall administrator to change the POPS and LDAPS default ports on the Exchange 2003 server. Is this possible and how to do it? I have searched the web and found nothing on this topic.<br />
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port numbers to 16363 – LDAPS, 16995 – POP3S 
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Hi, i have a request from the firewall administrator to change the POPS and LDAPS default ports on the Exchange 2003 server. Is this possible and how to do it? I have searched the web and found nothing on this topic.

port numbers to 16363 – LDAPS, 16995 – POP3S 

Change POP Secure and LDAP secure default ports

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.