## dsn_notify
## dsn_return
## editor
+## envelope_from_address
## gecos_mask
## hcache_backend
## homedir
## no
## quit
## sendmail
+## sendmail_wait
## shell
## sysconfdir
## tmpdir
+## use_8bitmime
## use_domain
+## use_envelope_from
## username
## version
## yes