Install gsasl by entering the following commands in the terminal:
sudo apt update sudo apt install gsasl
Description:
GNU SASL command line utility
GNU SASL is an implementation of the Simple Authentication and Security Layer framework and a few common SASL mechanisms. SASL is used by network servers (e.g., IMAP, SMTP) to request authentication from clients, and in clients to authenticate against servers. . This package contains the GNU SASL command line tool and the GNU SASL manual.
Homepage: http://www.gnu.org/software/gsasl/
Version: 1.8.0-8ubuntu3
Section: universe/devel