ote:
As example mail from root@sx1.labs.polarion.com should be masqueraded to mail from root@polarion.com and etc.
I believe in your /etc/postfix/main.cf file, just add the following:
masquerade_domains = foo.example.com example.com
It looks like
masquerade_domains = sx1.labs.polarion.com polarion.com
Is it right that now sx1.labs.polarion.com should be masqueraded to polarion.com??
Unfortunatelly, it does not works.
Regards,
D.