Petri Riihikallio:
>
> > Maurizio Caloro <mau...@gmx.ch> wrote on 01.02.2017 at 15:13:
> >
> > Hello Postfix
> >
> > Probably not the first one with this question, but please i need a little
> > help!
> >
> > If sending any Mail to GMX or WEB.de, i have here this error, Please view
> > Mail.log
> > last two lines. i undestond that GMX will check the Resolver-Name, "dynamic
> > IP Ranges"
> > Yes true i'am running now with dynamic IP Address "DSL Connection" but also
> > running
> > a service like No-Ip that will forrward the MXrecord, mail.caloro.ch.
> >
> > But exist here any way to solv this issue, or are here the only way to buy
> > Static-IP
> > Address so GMX can Resolv the Name from Sender correct? or i have
> > understond any thing
> > wrong here?
>
> There is nothing you can do about it. If those services refuse to accept mail
> from you that is the end of the story.
>
> If you want to run your own mailserver from a dynamic IP address you should
> configure Postfix to relay all your outgoing mail through your ISP?s mail
> server. It has a static IP and (hopefully) good reputation. You can still
> recive mail directly from the net. Relaying applies only to outgoing mail,
> adding an extra hop to each message.
/etc/postfix/main.cf:
# The [] are required.
relayhost = [mail.isp.net]:587
You will also have to set up SASL authentication, otherwise the
server may reject mail.
http://www.postfix.org/SASL_README.html#client_sasl
Wietse
