Hi, I have a crm app on a remote server 203.132.83.xx and I can not get it to relay emails from my zimbra server. This server is in India and I do have the MTA set like this:
203.132.83.0/27

this is a sales software tool that sends data from the application. the remote server can not access port 25 on my zimbra server. Please advise.

Thank you very much.