Well,
Users sending mails through Thunderbird (MUA), if send mails to hotmail.com the mail server will ask for authentication, and you know getting authentication over 25 is not a good idea.
Now, asking the users to get authenticate over SSL port i.e. 465 solves my issue.
But the issue is if the users without authentication uses the port 465 and deliver to its own domain, the mail server accepts the mail.
The port 465 or any SSL port for SMTP shouldn't accept mail for any domain before the users gets authenticated, and my previous mail server had that capability.
Regards
Adeel |