Odd FTP issue

[profm2]

Hi all,

I'm having an issue with FTPing into my server.

If I type my internal IP address in (192.168.x.x), then everything works normally, I can connect and update my site, etc.

If I go through the "front door" from outside my network by either the IP or the URL (domain.com), then I get the following:

Status:	Connection established, waiting for welcome message...
Response:	220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response:	220-You are user number 1 of 50 allowed.
Response:	220-Local time is now 12:32. Server port: 21.
Response:	220-This is a private system - No anonymous login
Response:	220-IPv6 connections are also welcome on this server.
Response:	220 You will be disconnected after 15 minutes of inactivity.
Command:	USER (username)
Response:	331 User (username) OK. Password required
Command:	PASS ********
Response:	230-User (username) has group access to:  client1    sshusers  
Response:	230 OK. Current restricted directory is /
Command:	SYST
Response:	215 UNIX Type: L8
Command:	FEAT
Response:	211-Extensions supported:
Response:	 EPRT
Response:	 IDLE
Response:	 MDTM
Response:	 SIZE
Response:	 REST STREAM
Response:	 MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
Response:	 MLSD
Response:	 AUTH TLS
Response:	 PBSZ
Response:	 PROT
Response:	 UTF8
Response:	 ESTA
Response:	 PASV
Response:	 EPSV
Response:	 SPSV
Response:	 ESTP
Response:	211 End.
Command:	OPTS UTF8 ON
Response:	200 OK, UTF-8 enabled
Status:	Connected
Status:	Retrieving directory listing...
Command:	PWD
Response:	257 "/" is your current location
Command:	TYPE I
Response:	200 TYPE is now 8-bit binary
Command:	PASV
Response:	227 Entering Passive Mode (internal ip address here,204,116)
Status:	Server sent passive reply with unroutable address. Using server address instead.
Command:	MLSD
Error:	Connection timed out
Error:	Failed to retrieve directory listing

So, my question is, does anyone know how I can FTP into my site through the URL or IP instead of the internal IP?