Så når du pinger DNS adressen, så peger den fint nok på din nye ip adresse? Svarer adressen på port 80 / 443 udefra ?
--

WAN IP adressen i routeren er det den samme som hvis du hjemmefra går ind på www.myip.dk[...] ?
--
FFHAU! This is 2017, "I'm not good with computers" is no longer a valid excuse.

#1 nej jeg får denne fejl jeg formoder det er min egen dns server der fejler More Information About Smtp Banner CheckThe SMTP banner issued by your email server did not contain the hostname we resolved for your server’s IP address.Additional InformationEmail servers answer connections on port 25 with a string of text called an SMTP Banner whose purpose is to announce the server and any information that the administrator would like to convey to the world.It is best practice to put the name of your server in your SMTP banner so that anybody who connects via your IP Address has a clue as to who they are talking to. You will get this warning if the name you present yourself as is not in the same domain as the hostname we get when we perform a PTR lookup on your IP Address.For a time many servers would "mask" their SMTP banners by replacing the characters with asterisks to anybody outside of their network. The logic behind this was often that you did not want to broadcast any information about your network to people outside for fear of giving them any information that might help them in an attack against your server. The benefits of doing this are minimal and many servers perform a banner check as part of spam mitigation, so it has a negative cost associated with the practice. Our tool will issue a warning if your banner is masked.Some receiving mail servers may use a mismatched or masked banner as an indication of a possible spam source in a scoring system, but most will not reject incoming mail solely on this basis.If you do not have a PTR record, or your record does not match your hostname, we recommend that you contact your ISP and ask them to setup a reverse (PTR) record that matches the hostname of your mail server.
--

#2 ja. jeg kan fint tilgå serveren, så det er ikke problemet ligger udenfor serveren
--

kunne lyde som dns problem cmd: nslookup google.com fejler dette skal du nok kigge på din dns, herved din dns server indstillinger for forward.
--
Gæstebruger, opret dit eget login og få din egen signatur.

#5 korrekt den fejler. Hvordan får jeg den nulstillet?
--

Med det du fortæller havde jeg prøvet med følgende:Sæt din dns server til at forwarde til adresserne 8.8.8.8 og 8.8.4.4, hvis ikke det allerede er tilfældet. Cmd - ipconfig /release og derefter ipconfig /renew for til sidst med ipconfig /flushdns Lav en nslookup google.com igen og tjek om den finder ip adressen herpå.
--