Patrik B?t: > > The correct description is: > > > > When both IPv4 and IPv6 support are enabled, the Postfix SMTP > > client, for Postfix versions prior to 2.8, will attempt to > > connect via IPv6 before attempting to use IPv4. Starting > > with 2.8 protocol preference is controlled via the new > > smtp_address_preference parameter.
The Postfix 2.11 manpage says: "When both IPv4 and IPv6 support are enabled, the Postfix SMTP client will choose the protocol as specified with the smtp_address_preference parameter. Postfix versions before 2.8 attempt to connect via IPv6 before attempting to use IPv4." That is, it describes current behavior before historical behavior. Wietse