Domain-Based SMTP Routing to Internal Servers
It should be possible, to choose form Host List different Hosts (internal IPs or DNS names) for sending mails to these hosts according to mail domain. For example, astaro smtp security should be able to relay mails from google.com to host A abd mails from web.com to host B. Same goes for outgoing mails and MTAs (smart hosts).
Probably not for the same reason than he do, but we would like this feature as well. We are building a web hosting service and need to allow all relay coming from @ourdomain.net. Presently the solution is either only use a webmailer that relay mail internally but then it is impossible for a user to use let say outlook or his iphone.
Elmar Haag commented
What scenario/business case is behind this request? I understand why someone wants to have domain-based SMTP routing based on the RECIPIENT domain or mail-adress, but I never heard about routing of mails based on the SENDER domain/mailaddress. What is the intention behind?