Check out the Data Path Security Reference at http://technet.microsoft.com/en-us/library/bb331973(EXCHG.80).aspx
Chuck Robinson, MCSE: Messaging, VCP Senior Practice Consultant EMC Global Services, Microsoft Practice tel 732-321-3644 xt.45, mobile 973-865-0394, fax 732-321-6855 email: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]> www.emc.com/mspractice<http://www.emc.com/> From: McCready, Robert [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 19, 2008 2:05 PM To: MS-Exchange Admin Issues Subject: Exchange 2007 TLS Encryption Can somebody tell me what port Exchange 2007 uses for TLS encryption to talk between two different domains??? Does it just use SMTP port 25 or something else? Thanks. Robert ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~