500 Syntax error, command unrecognized:

Every now and then I get this error when connecting to this one FTP server:


[15:54:07] SmartFTP v2.0.997.4
[15:54:08] Resolving host name "**************"
[15:54:08] Connecting to ************ Port: 21
[15:54:08] Connected to *************.
[15:54:08] 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
[15:54:08] 220-You are user number 8 of 50 allowed.
[15:54:08] 220-Local time is now 14:54. Server port: 21.
[15:54:08] 220-This is a private system - No anonymous login
[15:54:08] 220 You will be disconnected after 15 minutes of inactivity.
[15:54:08] USER ****
[15:54:08] 331 User **** OK. Password required
[15:54:08] PASS (hidden)
[15:54:08] 230-User **** has group access to: ***
[15:54:08] 230 OK. Current restricted directory is /
[15:54:08] SYST
[15:54:08] 215 UNIX Type: L8
[15:54:08] Detected Server Type: UNIX
[15:54:08] TYPE I
[15:54:08] 200 TYPE is now 8-bit binary
[15:54:08] REST 0
[15:54:09] 350 Restarting at 0
[15:54:09] PWD
[15:54:09] 257 "/" is your current location
[15:54:09] TYPE A
[15:54:09] 200 TYPE is now ASCII
[15:54:09] PORT 10,0,0,106,15,119
[15:54:09] 500 Syntax error, command unrecognized: "RT **,**,**,**,19,137"
[15:54:09] Automatic failover of data connection mode from "Active Mode (PORT)" to "Passive Mode (PASV)".
[15:54:09] PASV
[15:54:10] 500 Unknown command

I do have a registered copy of SmartFTP I just didn't know if you wanted my info right in the post.

Thanks for the help

Hello ..

Please add your license key id to your forum profile. The problem is somewhere between your router and the server. I suggest you update your router with the latest firmware.

Regards,
SmartFTP

Reg ID: added

Hello ..

Please add your license key id to your forum profile. The problem is somewhere between your router and the server. I suggest you update your router with the latest firmware.

Regards,
SmartFTP