Sometimes the email software may not retrieve email from the server, the problem can arrise when the port setting for the incoming server is set to the standard port of 25. Portfox Design for security reasons (to stop the majority of SPAM) have set it to port 26.
So if you have an issue with mail not being delivered on port 25, just check the setttings for your incoming mail (pop).
Depending on the Operating System and type of email software the location can vary where to set this. Feel free to send an email to us and we can help you further.