Mail delivery failed: returning message to sender

[Mail Delivery System]

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  admin na turistik.cz
    SMTP error from remote mail server after RCPT TO:<admin na turistik.cz>:
    host mx.stable.cz [95.168.198.204]: 550-rejected mail because 62.36.20.208 (ES) is in a black list at
    550-spam.spamrats.com
    550 SPAMRATS IP Addresses See: http://www.spamrats.com/bl?62.36.20.208
  ou.vrbice na o2active.cz
    SMTP error from remote mail server after RCPT TO:<ou.vrbice na o2active.cz>:
    host smtp-in.quick.cz [90.176.151.97]: 554 5.7.1 Service unavailable; Client host [62.36.20.208] blocked using bl.iol.cz