This is about a way to get realtime maildelivery while your connection to the internet is a simple dialup typofthing. Primary goals are: Simple encrypted/secure impossible to loose mail or danger of false delivery. Although this solution uses dyndns, it avoids the pitfalls of other solutions I have seen published in books and on the web!
Here you can download some scripts to get a working method of sending SMS with a simple mail. For example, you mail to 01712323@sms-gateway.local and the subject+body is sent to the number 01712323. Great for emergency notifications - failing raid drives, ups-failure etc.
There are many Webinterfaces for Hylafax out there - mine is free of cost, simple to install and proven to work reliable. Incoming faxes can be printed and deleted through the webinterface. See screenshot.