Emails Not Sending from CRM, Active Mailbox is showing success in Incoming and Outgoing both.

I have test and enabled mail box, mailbox is showing success in incoming and outgoing column. Also i cant able to sync incoming mails to my email address. I have searched a lot on internet, but not getting any help. I just fed up of this. If someone having a fix for this, please tell me steps to configure settings so that i can sync emails 2-way.

i am using these settings :

incoming Server - pop.gmail.com

outgoing server - smtp.gmail.com

incoming port - 995

outgoing port - 25

Authentication Type for both - Basic

Username and Password - My Gmail Username and Password

Use Same settings for Outgoing - Yes

Minimum Pooling Interval - 5 minutes