> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Rob Kampen
> Sent: Tuesday, April 09, 2013 7:35 PM
> To: CentOS mailing list
> Subject: Re: Strange Postfix problem
>
> On 04/10/2013 03:58 AM, tdukes@xxxxxxxxxxxxxxxxxxx wrote:
> > Hello,
> >
> > Was trying to setup postfix on my home PC. Running Centos
> 6.4. I don't
> > have a static IP and use zoneedit and ddclient to keep my
> installation
> > of zoneminder current.
> >
> > So I decided I wanted to get zoneminder to send me email
> alerts. Sent
> > some test messages but none were sent.
> >
> > I went to webdnstools website thinking maybe there is a dns
> or network
> > problem.
> >
> > When it checks my dns setup, everything is fine except the
> mail server
> > is has the wrong IP address. The A record and the www A record have
> > the correct IP. The IP address its reporting is one that
> belongs to my ISP.
> sounds like your ISP only allows certain services through and
> intercepts the rest as you do not have a fixed IP.
> may want to talk to them as they control the DNS and reverse
> DNS, both of which should be correct for email servers to
> function correctly.
> Basically, to do an email server you need a fixed IP.
I kind of suspected that. However, if I go to yougetsignal, port forwarding
tester and check ports 25 and 110 for my domain, the ports are open. If I do
mail.domain.com, the port is closed.
It sounds as though they are intercepting requests on those ports.
Thanks!!
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