Ошибка доставки в рассылке

Приходит куча таких писем

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:

noway@email.ru
SMTP error from remote mail server after RCPT TO:<noway@email.ru>:
host mail.email.ru [194.67.1.204]: 550 noway@email.ru unknown user account

------ This is a copy of the message, including all the headers. ------

а так же вот для этих адресов

profit@dautkom.com.foto.ru
SMTP error from remote mail server after RCPT TO:<profit@dautkom.com.foto.ru>:
host dautkom.com.foto.ru [213.171.56.140]: 550 5.7.1 <profit@dautkom.com.foto.ru>... Relaying denied


latra@mail.ru
SMTP error from remote mail server after end of data:
host mxs.mail.ru [217.69.139.150]: 550 Message was not accepted -- invalid mailbox. Local mailbox latra@mail.ru is unavailable:
user not found

pr@liveinstyle.ru
SMTP error from remote mail server after RCPT TO:<pr@liveinstyle.ru>:
host mail-s13.1gb.ru [81.177.24.26]: 553 We do not relay without RFC2554 authentication.