============== this connection originated from IPv4. this means one of: - the source does not have IPv6 connectivity (try to fix that!) - the source has IPv6 connectivity, but preferred IPv4 for some reason (fix that!) - something on the server broke severely (e-mail user "sys" on 31a05b.net) in any of the three cases: this must be fixed. help IPv4 rest in peace [more text should be added in the future. this is a placeholder] ===============