Dynamic DNS and domain registration

[Rasjid Wilcox]

I'm thinking of registering my own domain name and hosting it at home via my 
TransACT connection, but don't really want to pay the premium for a fixed IP 
address, so I'm looking at the dynamic dns options.

Firstly, is it possible to host mail with a dynamic dns?  I've got the 
impression that mail exchangers do some reverse lookup thing.  Would the fact 
that my ip address would resolve back to 'somehost.webone.com.au' and not 
'mail.mydomain.net' be a problem?  (Or at least, this is what I understand 
would happen.)

That being said, at least some of the dynamic dns providers that I've looked 
at provide e-mail forwarding as an option.

A friend has recommended ChangeIP.com, and it looks I can do both domain 
registration and dynamic dns with them for US$21 the first year, US$39 per 
year (US$15 for the domain, US$24 for the dynamic DNS service).

On the other hand, dyndns.org has a once off charge of US$30 (+ I register 
the domain somewhere else, for around US$15 at most places as far as I can 
tell), and it supports open source software (donated US$20,000 to the Perl 
Fondation).

There seem to be many other option too (http://www.technopagan.org/dynamic/ 
gives a list of some/most).

I'd appreciate some feedback on other people experiences.

Thanks,

Rasjid.