Thank you for the reply @Joe053204-xrx.
So, for the 1 point, i have allready configured sending adress:
I'm sure that printer configuration must be correctly, because I clone all settings from this printer and installed it on the same model of printer but in diffrent location and it's working fine. It can be possible that there is other uncommon problem with printer? If not - i think like you say - there is can be a problem with relay server configuration, but i don't have permissions to check it out. I asked an admin and they confirm me that external IP adress was allready added to whitelist on relay server and it must working. Now i gonna try to read this article and make sure what i need to do now, because i want to solve this immediately.