[NCLUG] comcast blocking port 25?

[DJ Eshelman]

oh...

okay, well let me rephrase myself :)

I have my server checking the reverse DNS against the server name that
claims to have sent the email - if it doesn't match, then the mail is
rejected.
Perhaps we were talking about the same thing...

cheers

-DJ

On 3/26/07, Bob Proulx <bob at proulx.com> wrote:
>
> Bob Proulx wrote:
> > DJ Eshelman wrote:
> > > Now for the question:
> > > Is it possible for mail from a dynamic IP to have a reverse DNS
> > > entry?
> >
> > Not usually.  It is possible if the folks authoritative for that IP
> > address block allow and enable dynamic dns updates.  This is typical
> > on the local network but I have never seen the big ISPs provide that.
>
> And by this I mean a reverse entry that maps to the current hostname.
> Most dynamic IP addresses have reverse dns entries.  They just don't
> mean very much to say 5-10-24-18-dyn-ip.example.com.
>
> Bob
> _______________________________________________
> NCLUG mailing list       NCLUG at nclug.org
>
> To unsubscribe, subscribe, or modify
> your settings, go to:
> http://www.nclug.org/mailman/listinfo/nclug
>