smtptest(1) on Linux
The text 73050725a39b, as Debian 3.1 (Sarge) shipped it.
interactive SMTP test program
Flags it lists
-
-c -
-s -
-v
The text 73050725a39b, as Debian 3.1 (Sarge) shipped it.
interactive SMTP test program
-c
-s
-v