Frequently Asked Questions on Difference Between SMTP and LMTP
How many ports LMTP and SMTP support?
LMTP uses port 24 instead of port 25. In SMTP 25,587,2525, where port 25 is the standard SMTP, port 587 is the default port; it supports TLS, and port 2525, we can’t say officially SMTP port, but cloud hosting providers still support this port.
Is LMTP support authentication?
LMTP does not support authentication fundamentally like SMTP. In LMTP, we use MTA for sending and receiving mail. But in the case of authentication, we use MTLS to authenticate the connection. Since MTLS is a mutual TLS, the API is secure.
Difference Between SMTP and LMTP
SMTP and LMTP are the transmission protocols. The full form of SMTP is Simple Mail Transfer Protocol, as the name suggests; it simply transfers the email messages to another over the internet. It works over the wide-area network and the port 25 used in SMTP. The full form of LMTP is a Local Mail Transfer Protocol that transfers email messages to another locally. It does not work over a wide network, and port 24 is used in LMTP. In this article, we will cover the explanation of SMTP and LMTP and their differences.