In this case, since the bounce message explicitly says "local" in "local dynamic IP address" I'd take it to mean the system administrator of "jeffbozarth.com" has created his own hand-made blacklist of IPs he believes to be dynamic.
Also, the fact that it's a 4xx series code, not a 5xx series code suggests either a greylist, or some broken attempt at being clever. Hopefully it's just a greylist. If you really need to email that particular site, I'd find some other channel to contact that admin and find out what's going on. HotX wrote: > I have the same problem. I saw this message fist time. Anyone know what is > wrong and how eliminate this problem? > > Dan Barker wrote: > >> I received this bounce this morning. >> >> "Delivery failed 20 attempts: [EMAIL PROTECTED] >> >> Unexpected connection response from server: >> 421 mails from 74.254.46.133 refused: local dynamic IP address >> 74.254.46.133" >> >> Does anybody recognize the text of the message? I'd like to confirm that >> there are no popular DUL lists showing 74.254.46.133 as dynamic, but the >> 421 >> message says very little. DNSReport says it's clean, so I guess I'm OK. >> >> Dan >> >> >> >> > >
