Redmine

What do you do to try to see if the mails work? Do you have an smtp server on localhost that accepts emails on localhost (127.0.01)? What error do you see? Have a look at the redmine log (redmine_dir/logs/production.log in most cases) and your MTA log (see if the MTA gets connections from redmine and maybe refuses them for some reason).

Redmine run on OpenSUSE 192.168.66.73 and company mail server on 192.168.66.4. Felix please help me Linux is not my big friend. :( And I dont know what must find in production.log.

This has nothing to do with linux but with understanding and configuring the mail setup. If your MTA (mail server) is on 192.168.66.4 and your redmine on 192.168.66.73, then address: localhost is wrong, you must put the address of the mail server in there.

And now?? Where is wrong?

Listen, I can't tell you what settings you need because I don't know anything about your setup, and I'm not going to go every little step of the way with you. Contact the administrator of your mail server and ask him for the configuration you need (do you need a password or not, what domains does the mail server serve, is the redmine server in a range of allowed IPs for the mail server, …) and then you need to put the configuration in the email.yml and restart your redmine server for it to pick up the changes. If you need more info about the configuration of ActionMailer (the component redmine uses to send mails), see the "configuration options" in the ActionMailer documentation.

No one's going to do the job for you, especially through a proxy like that because it is tiring and really really cumbersome. If you need that sort of help, you'd better get a consultant to do the job for you.