Can I redirect port 25 with a dynamic dns service?

[dsr at tao.merseine.nu]

On Tue, Jul 26, 2005 at 08:40:33AM -0400, Bill Horne wrote:
> Sorry if this is a dup: I posted the question before, but it's not in 
> the archives, so here it is again.
> 
> I'm using dyndns.org to redirect port 80 traffic to my server, but I'd 
> like to get port 25 going again too and I'd like alternatives to 
> dyndns.org's Mail Hop service.
> 
> Which dynamic DNS services will map port 25 to something else? Comcast 
> is blocking SMTP at my locaiton, so I need a workaround.

You can't do it that way, but what you can do is tell dyndns.org
to publish an MX record for you that points at a mail server
which *will* relay for you.

-dsr-