Hello, asking for help,

here the scenario:

Exchange 2003 running on a Windows 2003 Std 32 bit

Last week of July all emails from users that use Microsoft office 365 were bouncing back to the user and never delivery to my exchange,

by recommendation from Microsoft we applied Hotfix KB948963-x86 --Which fixed the problem and emails from 365 started to flow,

but this broke something else, now we are having some other clients that use to send emails form other email domain/email server, are now not able to deliver messages, also if I do an mx lookup I get that TLS is not supported even it is enabled.

If I apply the SSL certificate to the SMTP VS all and enable TLS, all emails from external sources are not delivered and sessions just keeps open and emails never received.

to allow emails to flow , I have to remove the certificate, but still have some customers complaining, plus in the mx lookup keeps saying TLS not supported.

when certificate applied and TLS enabled here is a record of the log when trying to send an email from my gmail address.

209.85.218.49 - mail-oi0-f49.google.com [06/Aug/2015:17:29:18 -0700] "EHLO -? mail-oi0-f49.google.com SMTP" 250 268
209.85.218.49 - mail-oi0-f49.google.com [06/Aug/2015:17:29:18 -0700] "MAIL -? FROM:<xxxxxxx@gmail.com> SMTP" 250 47
209.85.218.49 - mail-oi0-f49.google.com [06/Aug/2015:17:29:18 -0700] "RCPT -? TO:<xxxxx@xxxxxx.com> SMTP" 250 32
209.85.218.49 - mail-oi0-f49.google.com [06/Aug/2015:17:29:19 -0700] "BDAT -? <CAJU1U_1eWD3E+S7P=c_4OAWk-ZOWcD6F5HZeSyJccwk1XuymBQ@mail.gmail.com> SMTP" 250 106
209.85.218.49 - mail-oi0-f49.google.com [06/Aug/2015:17:29:19 -0700] "QUIT -?mail-oi0-f49.google.com SMTP" 240 70

Any help will be helpful,

thanks

Israel.