Which they aren't by default :-(
# automated jobs.
set net:max-retries 1
+# If SSL is used make sure the data connection is encrypted as well. This
+# should be the default behavior!.
+set ftp:ssl-protect-data yes
+set ftp:ssl-protect-fxp yes
+# Same for control connections (default).
+set ftp:ssl-protect-list yes
+# Make sure SSL is not dropped after a successful login (default).
+set ftp:ssl-use-ccc no
+# And verify the certificate and hostname, otherwise encryption doesn't matter
+# (default).
+set ssl:check-hostname yes
+set ssl:verify-certificate yes
+
# ALIASES