If you're a user of the MDaemon email server, and own either an iPhone, Android device or Windows mobile, it's quite likely at some point you'll want to synchronise your calendar, contacts and tasks etc. While the set-up steps for configuring MDaemon and the devices themselves are very straightforward, because MDaemon needs to be visible to the outside world, there are some networking considerations to be aware of.

In the last few weeks we have started seeing an increase in support requests relating to email delivery problems that are outside of the control of the MDaemon server. Specifically this happens when companies are relying on an ISP mail platform to provide POP3 mailboxes and SMTP services to deliver their mail to and from MDaemon. In this article I want to point out why the method you choose to get email in and out of MDaemon is so important and how you can redesign and often simplify your mail platform to minimise the effects of changes that are 'outside of your control'.

Over the last few months we have had an increasing number of support calls that relate to failing SMTP connections over Internet connections. This can happen on a range of network connections, whether it's mobile devices on 3G or home users trying to access their MDaemon mail server. Even businesses can find that they can no longer create outbound SMTP sessions on port 25 on their office broadband connections.