Simplify

src/freedombone-addxmpp

     exit 1
 fi
 
+USERNAME=$(echo $EMAIL_ADDRESS | awk -F '@' '{print $1}')
 if [ ! $NEW_USER_PASSWORD ]; then
     prosodyctl adduser $EMAIL_ADDRESS
 else
-    USERNAME=$(echo $EMAIL_ADDRESS | awk -F '@' '{print $1}')
     DOMAIN_NAME=$(echo $EMAIL_ADDRESS | awk -F '@' '{print $2}')
     prosodyctl register $USERNAME $DOMAIN_NAME "$NEW_USER_PASSWORD"
     if [ ! "$?" = "0" ]; then
 # add the xmpp address to email headers
 if [ -f /home/$USERNAME/.muttrc ]; then
     if ! grep -q "Jabber-ID" /home/$USERNAME/.muttrc; then
-        echo "my_hdr Jabber-ID: ${USERNAME}@${HOSTNAME}" >> /home/$USERNAME/.muttrc
+        echo "my_hdr Jabber-ID: $EMAIL_ADDRESS" >> /home/$USERNAME/.muttrc
     fi
 fi