LMTP encryption?

[michabbs]

My PMG delivers mails to my another host via smtp, where Postfix forwards them to Dovecot via LMTP. Actually that Postfix seems to be not necessary - PMG should be able to transport directly to Dovecot via LMTP. (Right?)
But - as far as I understand - mails will be transported in cleartext. Is LMTP with SSL possible? (Does "LMTPS" even exist?)

 

[dcsapak]

according to https://www.postfix.org/TLS_README.html
ltmp client implements the same features as smtp but the config options change from smtp_* to lmtp_*

in our default config we set the tls level to 'may' so it's Opportunistic TLS (meaning it's encrypted when the server supports it)
also we set the ltmp_tls_security_level to that of the smtp_security_level etc.