Our new exchange server is hosted by a vendor . we have many legacy applications that are sending eails everyday. these apps doesn't support authentication methods that are required for using new exchange server. I am thinking about having a SMTP Relay installed in our internal network to accept incoming emails from legacy apps and forward them to external exchange ;
- any suggestions ? whay app should I use ?
- do I need to ask our vendor to set settings on external exchange to accept incoming messages from the relay ?