I e-mailed Netfirms support (wich is the company that hosts my blog) and they did not answer my question about this. It seams like every time you contact customer sevice (and I'm talking CS from any company, not only Netfirms) they only read the first lines of your e-mail and then give you an answer from their FAQs wich you already read and didn't help fix your problem.
I set up an e-mail account from their control panel that is supposed to offer pop access. If I use a pop client to access the account, I can see the messages there, so I'm sure the account is working. But after setting up the blog by e-mail option in WordPress with the right account info, and loading wp-mail.php, I keep on getting the same error message: 'Ooops POP3 connect: Error  [No route to host]'.
I tried using a different pop e-mail account from my ISP and changing the settings in WordPress but it still doesn't work. I get the same error message.
I'm wondering, if I can access the e-mail account from within my pop e-mail client, how come I can't access it using wp-mail.php. It seems like the coding on this php page is the problem, and if it's not, then does anyone know of a free e-mail account that offers pop access and works with the post by e-mail feature in WordPress?