New answers tagged smtp
The master.cf file (usually found in /etc/posfix/master.cf) controls the startup and configuration of specific Postfix services. A configuration like this in that file, according to the documentation, will do what you want: smtp inet n - - - - smtpd -o smtpd_tls_security_level=none -o smtpd_sasl_auth_enable=no smtps inet n - - - - smtpd ...
SMTP is just a protocol to ask a remote server to deliver some mail. You cannot install SMTP on a server, you can only install commands that speak that protocol. Especially there are SMTP clients (that want to send mail) and SMTP servers (that are able to receive mails). You are probably thinking of some MTA. If you want to have a local copy of your mail ...
SMTP servers do not store sent emails: they just deliver them to the specified address. The server usually stores in a log file information about the sent email (from, to, subject, ...) but not the content.
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