I have my own dedi box, im on windows platform, im using mailenable software for mailing.
i hacked wp_login.php, functions with wp_mail() is not working whereas when i changed the thing to mail().. it does send mail..
so i check mailenable logs, it says syntax error for <WordPress <firstname.lastname@example.org>>
i saw from some post in blog that wordpress use php mail, this is what i got from php site
Note: The Windows implementation of mail() differs in many ways from the Unix implementation. First, it doesn't use a local binary for composing messages but only operates on direct sockets which means a MTA is needed listening on a network socket (which can either on the localhost or a remote machine).
Second, the custom headers like From:, Cc:, Bcc: and Date: are not interpreted by the MTA in the first place, but are parsed by PHP.
As such, the to parameter should not be an address in the form of "Something <email@example.com>". The mail command may not parse this properly while talking with the MTA.
so does anyone know solution or which file to change to remove <WordPress from mail header so it look like <firstname.lastname@example.org>