Hi. I am a bit unclear about how email works in a closed domain from roaming clients (SASL auth clients).
If there is a postfix server that is configured to only accept and send email to users in the same domain, say for example j...@restricted.com can only send to another_u...@restricted.com, does this mean that the client's email never hops through other servers or "hops"? I would assume it does not hop since the user authenticated, then crafted an email to another user in same domain, using only the mail server IP that is allowed to relay. I would think it would be all encapsulated inside the mail server, never leaving out to the internet, but I do know that the clients have to send via the SMTP protocol, either port 25 or 465 or any other custom port chosen. Can someone please verify if the email travels through hops in this environment or does it remain inside the postfix server? Thanks. -- View this message in context: http://postfix.1071664.n5.nabble.com/Unclear-of-smtp-protocol-in-a-restricted-domain-tp66494.html Sent from the Postfix Users mailing list archive at Nabble.com.
