Changes

== MTA for Receiving Email ==

The default job of an SMTP server is to forward the message recieved to another email server. That's what we've set up in the previous lab: your postfix receives an email from your client (Thunderbird) and forwards it to the destination server. The other thing an SMTP server can be configured to do is receive email. It still uses SMTP but instead of forwarding it to another SMTP server it will forward it to the Local Delivery Agent (LDA).