Hello, I want to realize the following: mail.domain1.com --> mail.domain1.com mail.domain2.com --> mail.domain2.com mail.domain3.com --> mail.domain3.com mail.domain4.com --> mail.domain4.com mail.domain5.com --> mail.domain5.com It has to be like this, because there is another nginx integrated in the application software ... I already read about variables in proxy_pby pwe - Nginx Mailing List - English