Thanks Mark for your fast reply :-). I have been able to create the domains with the domain alias . My mailman core is version 3.3 Now I have created the mailing list with 'mailman create' but I get this error:
postmap: warning: /etc/postfix/main.cf, line 65: overriding earlier entry: virtual_alias_maps=hash:/etc/postfix/virtual_alias/example.edu, hash:/etc/postfix/virtual_alias/example.org
in my postfix file I have the following code:
virtual_alias_maps = hash:/etc/postfix/virtual_alias/example.edu, hash:/etc/postfix/virtual_alias/example.org, hash:/var/lib/mailman3/data/postfix_vmap
Should I remove hash:/etc/postfix/virtual_alias/example.edu, and hash:/etc/postfix/virtual_alias/example.org, ? In that case how I create alias not related to mailman?
Thanks in advance.
Albert