I think DynDNS.com (the folks who have no-ip.org right?) have an option
to setup a MX record for dynamic host names. You'll more than likely
want to enable this unless you have a reason not to.
Basic setup for accepting and sending mail with your ddns hostname:
mydomain = mymachine.no-ip.org
myhostname = $mydomain
myorigin = $mydomain
mydestination = $mydomain
Problems to consider:
1. Your ISP may block smtp traffic from you to any other server except
their very own smtp servers. This is pretty common from what I've seen.
2. Some servers may reject your mail if you do not have a valid PTR
record for your IP address. By default your ISP will probably have one,
but it won't resolve to mymachine.no-ip.org which may cause the delivery
problem mentioned before.
J.P.
Adam McCarthy wrote:
I have looked for a guide on the Internet on how to do this but I have
never found one.
I am wishing to run a request tracker (RT) and need postfix.
Now I already have the email coming in, sent to RT by fetch mail of a
gmail account.
Now how can I make it so that postfix sends replies and other stuff
back to the users that will work with me having either just an IP for
my postfix or my DNS.
I guess to sum it all up, how can I use postfix with just an IP or a
DNS that just translates to my IP though I can't do stuff like add on
to the DNS like mail.mymachine.no-ip.org.
