Ano,, Mail Delivery System cele to vypada takto

This is the mail system at host serverg.mh.cz.

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own text from the attached returned message.

The mail system

<lukas.voracek@pm.mpsv.cz>: host bar22.mpsv.cz[91.214.158.19] said: 554 IP name
lookup failed. No PTR record found. (in reply to RCPT TO command)