Install cyrus-sasl2-doc by entering the following commands in the terminal:
sudo apt update sudo apt install cyrus-sasl2-doc
Description:
Cyrus SASL - documentation
This is the Cyrus SASL API implementation, version 2.1. See package libsasl2-2 and RFC 2222 for more information. . This package contains documentation for system administrators.
Homepage: https://www.cyrusimap.org/
Version: 2.1.27~101-g0780600+dfsg-3ubuntu2
Section: doc