Unconfirmed Members of Subscription Lists

Recently I have modified subscribelib2.php file according to following discussion

https://forums.phplist.com/viewtopic.php?f=16&t=1346&sid=534ee377f2cda319cd2c2413e397c786

in order to discard confirmation processes. After the modifications I can say that I dont get confirmation process and the emails that add get automatically into my subscription list, except hotmail exception. All the microsoft emails (hotmail, windowslive) that I add goes to unconfirmed members.

Any idea about how can I add emails directly on confirmed status ?

Thanks