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:

  ddd na ddd.cz
    SMTP error from remote mail server after end of data:
    host ign-mx2.webglobe.com [217.67.30.112]: 550 Message discarded as high-probability spam
  fishingteam na email.cz
    SMTP error from remote mail server after RCPT TO:<fishingteam na email.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  vulkan77 na seznam.cz
    SMTP error from remote mail server after RCPT TO:<vulkan77 na seznam.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  malron na seznam.cz
    SMTP error from remote mail server after RCPT TO:<malron na seznam.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  pacineczka na email.cz
    SMTP error from remote mail server after RCPT TO:<pacineczka na email.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  cz3lch na seznam.cz
    SMTP error from remote mail server after RCPT TO:<cz3lch na seznam.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  akbar.tnt na seznam.cz
    SMTP error from remote mail server after RCPT TO:<akbar.tnt na seznam.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  primarodina na seznam.cz
    SMTP error from remote mail server after RCPT TO:<primarodina na seznam.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.
  tynnina na seznam.cz
    SMTP error from remote mail server after RCPT TO:<tynnina na seznam.cz>:
    host mx1.seznam.cz [77.75.76.42]: 550 5.1.1 Sorry, no mailbox here by that name.