FTPS jen pro nektere?

neni to poprvy, co jsem si vsiml, ze ftp server wz umi ftps. viz treba:
230 Access granted for kkpolerady.wz.cz
SYST
215 UNIX Type: L8
FEAT
211-Features:
MDTM
REST STREAM
SIZE
AUTH TLS
PBSZ
PROT
211 End
Connect ok!
ve vlakne http://www.webzdarma.cz/forum/read.php?f=6&i=47334&t=47334 a v nekterych dalsich (staci dat hledat AUTH TLS).

pro domenu webz to ale neplati:
230 Access granted for tonik.webz.cz.
SYST
215 UNIX Type: L8
FEAT
211-Features:
MDTM
REST STREAM
SIZE
211 End
Connect ok!

a pri pokusu o pripojeni pres ftps:
[11:17:22] Response: 220 ftp server ready
[11:17:22] Command: AUTH TLS
[11:17:22] Response: 500 AUTH not understood
[11:17:22] Error: Unable to connect!
a nejde to ani pres implicit ani explicit ssl ani tls encryption

tak jak to je? bude ftps pro vsechny domeny a ucty, nebo jenom pro nektery, nebo vlastne neni vubec?