I managed to use the posting by email using Word 2007 and 2010, but I need not depend on software installed, so I tried to use the post from WP.
I created an email account on http://www.aol.com *; successfully tested sending and receiving on my client e-mail program (Windows Mail in Windows Vista) and AOL webmail.
Then I went into my WP (panel -> options -> writing) and put POP and IMAP settings (besides ID and password); when I test both settings (POP and IMAP) at address
http://www. [domain]. com.br / [wp-directory] / wp-mail.php
the SAME message appeared:
POP3 connect: Error 
Where am I going wrong (in email service, setup WP, WP version)?
Can I post on web screens of my WP, email program and AOL webmail if this helps answer the doubts.
* This email service worked in my email client program and Windows, unlike others such as Gmail, Hotmail or paid particular email.