i continue with that problem.
if i write ftp.xxxx.com i canīt conect but if i write xxxxx.com i can perfect conection.
if i erase this part on proftpd_ispconfig
All ok, but when i create the new one client or Cname or A Record, the file proftp_ispconfig.conf returns to his previous condition. With which it does not work. If I return to erase , it returns to work.
Thaks for all and pardon for my english