esmtpd-ssl(8) on Linux
The text 331078ab5153, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
The Courier mail server mail server ESMTP daemon
The text 331078ab5153, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
The Courier mail server mail server ESMTP daemon