diff --git a/changelog b/changelog
index 74d060de5cf109bec0b83174c4222da8f5f54417..ef8ad1f6ae7e0987d40dce869f4666935b1f76d5 100644
--- a/changelog
+++ b/changelog
@@ -11,5 +11,6 @@ Time-stamp: <2012-05-27>
     - only update when IP is different from last successful update.
     - send email to EMAIL and FATAL_ERROR_EMAIL.
     - check IP is a valid public IP.
+  - check config is valid.
 * v0.1.0
   - init version. was used to update sylecn01.dnsd.me.
diff --git a/src/bin/ddclient-http b/src/bin/ddclient-http
index 26ff4bc419fe07ee8386e9b4a1f42a9706cf192c..2443dfd5e6d889f9ae427f5c723f9394ce0e48ce 100755
--- a/src/bin/ddclient-http
+++ b/src/bin/ddclient-http
@@ -40,7 +40,7 @@ log() {
 # Usage: err [MESSAGE..]
 err() {
 	logger -t ddclient_http -p user.err "$@"
-	echo "$@" | mail -s "ddclient-http Error" ${EMAIL:-root@localhost}
+	echo -e "$@" | mail -s "ddclient-http Error" ${EMAIL:-root@localhost}
 }
 
 # Usage: fatal_err [MESSAGE..]
@@ -48,7 +48,7 @@ err() {
 # it's set in config file.
 fatal_err() {
 	err "$@"
-	test -z "$FATAL_ERROR_EMAIL" || echo "$@" | mail -s "ddclient-http FATAL Error" "$FATAL_ERROR_EMAIL"
+	test -z "$FATAL_ERROR_EMAIL" || echo -e "$@" | mail -s "ddclient-http FATAL Error" "$FATAL_ERROR_EMAIL"
 }
 
 # which host to update and it's credentials.
@@ -58,16 +58,16 @@ if [ -f "$CONFIG_FILE" ]; then
 	# check that config file is valid.
 	msgs=""
 	if [ -z "$HOSTNAME" -o -z "$USERNAME" -o -z "$PASSWORD" ]; then
-		msg=$msg"Error: HOSTNAME, USERNAME, or PASSWORD is not set.\n"
+		msg=$msg"HOSTNAME, USERNAME, or PASSWORD is not set.\n"
 	fi
 	if [ `echo -n "$USERNAME" | wc -m` -gt 24 ]; then
-		msg=$msg"Error: USERNAME should be less than 24 characters.\n"
+		msg=$msg"USERNAME should be less than 24 characters.\n"
 	fi
 	if [ `echo -n "$PASSWORD" | wc -m` -gt 24 ]; then
-		msg=$msg"Error: PASSWORD should be less than 24 characters.\n"
+		msg=$msg"PASSWORD should be less than 24 characters.\n"
 	fi
 	if [ -n "$msg" ]; then
-		fatal_err `printf "Error: Bad config file. $msg"`
+		fatal_err "`printf "Error: Bad config file.\n$msg"`"
 		exit $BAD_CONF
 	fi
 else