postfix gives warnings about deprecated parameters
May 27 12:27:56 localhost.localdomain cond_slp[1447]: /usr/sbin/postconf:
warning: /etc/postfix/main.cf: support for parameter "smtp_enforce_tls" will be
removed; instead, specify "smtp_tls_security_level"
May 27 12:27:56 localhost.localdomain cond_slp[1447]: /usr/sbin/postconf:
warning: /etc/postfix/main.cf: support for parameter "smtpd_enforce_tls" will
be removed; instead, specify "smtpd_tls_security_level"
May 27 12:27:56 localhost.localdomain cond_slp[1447]: /usr/sbin/postconf:
warning: /etc/postfix/main.cf: support for parameter "smtp_use_tls" will be
removed; instead, specify "smtp_tls_security_level"
May 27 12:27:56 localhost.localdomain cond_slp[1447]: /usr/sbin/postconf:
warning: /etc/postfix/main.cf: support for parameter "smtpd_use_tls" will be
removed; instead, specify "smtpd_tls_security_level"

These parameters are introduced in /sbin/config.postfix

The attached patch file removes this introduction, the replacements are already
present in config.postfix.
Also a bug in the naming of backups in /var/adm/backups/postfix is addressed.

In principle "$POSTFIX_SMTP_TLS_CLIENT" == "must" should not be expanded in
$PCONF -e "smtp_tls_security_level = encrypt". This is a global definition. It
should be expanded in smtp_tls_policy_maps = lmdb:/etc/postfix/tls_policy and
only for specific destinations in /etc/postfix/tls_policy.
So the possibility "must" should be accompanied by specific destinations.