How many servers do you have? What version of Exchange is this? You don't need IMAP4 or IMAPTLS for OWA to function? Mark Fugatt MCSE, MCT, Microsoft Exchange MVP Pentech Office Solutions Inc Rochester, NY Tel: 585 576 4750 http://www.4mcts.com http://www.exchangetrainer.com -----Original Message----- From: Jen [mailto:jmar@xxxxxxxxxxxxxxx] Sent: Friday, January 16, 2004 1:49 PM To: [ExchangeList] Subject: [exchangelist] OWA Ports http://www.MSExchange.org/ hi, we are thinking of implementing OWA, from what i have seen ports 80, 443, 143 993 need to be open. i have ports 80 and 443 open. do i need to open IMAP4 & IMAPTLS? if so why? ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------