what port does exchange use for outlook
Open port 25 (SMTP) and port 80, 443 (SSL) only from the Internet to your Exchange server. you should not be using OWA without SSL, http://www.msexchange.org/tutorials/Securing-Exchange-Server-2003-Outlook-Web-Access-Chapter5.html.http://www.petri.co.il/configure_ssl_on_owa.htm. this is nice to read as well.pen port 25 (SMTP) and port 80, 443 (SSL) only from the Internet to your Exchange server. you should not be using OWA without SSL, http://www.msexchange.org/tutorials/Securing-Exchange-Server-2003-Outlook-Web-Access-Chapter5.html. http://www.petri.co.il/configure_ssl_on_owa.htm.