Use php mail function we can able to send mail to gmail, yahoo and all but we cant able to other domain mail ids. Please help me on this.
For eg, We have a domain called xxx.com but my mail id is is email@example.com
From xxx.com we can able to send mail to yahoo, gmail and etc but we cant able to send mail to firstname.lastname@example.org
For solving this what thing I have to check, please help me on this..?