Silvio Siefke: > Hello, > > i install today postfix and all work, I think so, but SMTP-AUTH make > trouble again. > > I become: > > 554 5.7.1 <sisibox.silviosiefke.com>: Helo command rejected: Host not found > > Have someone Idea what can change? When I use SMTP-AUTH why check helo?
Because you configured Postfix to reject unknown names with
reject_unknown_helo_hostname.
Wietse
