WordPress new user registration password problem

see if the answer for you resides in one of these threads

http://wordpress.org/support/topic/142916?replies=4

http://wordpress.org/support/topic/177390?replies=4

or possible alternate fix, add this line to your wp-config.php file, right after all the define lines:
ini_set(“sendmail_from”, ‘your.email@example.com’);
Substitute your real working email address there, obviously.

I spent almost two days, solving this problem successfully. Above solution didn’t work, I tried every possible solution including checking if php mail() is enabled or not or adding the int() to config.php, nthing worked. OK here is my solution:
1- Install WP Mail SMTP from here
2- Set a mail on your own server like info@mydomain.com
3- in Plugin setting try to use SMTP instead of PHP mail
4- my test on Gmail was unsuccessful, that’s why I recommend you using your own mail
5- any setting with SSL or TLS was unsuccessful, so I used “No encryption”.
6- there are several available SMTP ports for me only 80 worked.

Good luck

same problem :(…..do we have to configure the mail server and rest details somewhere in WP ?