I am doing Exchange 5.5 to Exchange 2003 migration
Here are the configurations:
1. Exchange 5.5 SP4  runing on Windows 2000 SP4.
2. First Exchange 2003 SP1 server, which is runing ADC and SRS  joined to

I have a client that uses Domino Server with StartTLS. We are on Exchange
2000 with TLS enabled. We are able to send them email fine but they cannot
send or reply to our emails. According to the admin he states that Lotus
support TLS on secure port 25 and not 465(smtps). Here is ...