auth_passwd - Change account's password

       If username's password is oldpassword, it is replaced with newpassword.  service identifies which
       so-called "service"'s password is changed; like “imap” or “pop3”. Some Courier authentication library's
       back-end module can use different passwords for different services.  service is ignored if this is not
       the case.

       auth_passwd - Change account's password

        1. authlib(3)
           http://www.courier-mta.org/authlib/authlib.html

        2. auth_generic_meta(3)
           http://www.courier-mta.org/authlib/auth_generic.html

        3. auth_login_meta(3)
           http://www.courier-mta.org/authlib/auth_login.html

        4. auth_getuserinfo_meta(3)
           http://www.courier-mta.org/authlib/auth_getuserinfo.html

        5. auth_enumerate(3)
           http://www.courier-mta.org/authlib/auth_enumerate.html

Double Precision, Inc.                             10/28/2020                                     AUTH_PASSWD(3)

auth_passwd returns 0 if the password was succesfully changed. A non-0 error code indicates a failure..

authlib(3)[1], auth_generic_meta(3)[2], auth_login_meta(3)[3], auth_getuserinfo_meta(3)[4],
       auth_enumerate(3)[5].

       #include <courierauth.h>

       intrc=auth_passwd(constchar*service,constchar*username,constchar*oldpassword,constchar*newpassword);