i tried to use php mail() function in booking page of my add on domain "flexphysiotherapy.in" the problem is i can send mail to any mail address exept *@flexphysiotherapy.in i google'd and foud the following solution on yandex support site as i use yandex mail for domain for handling my e-mails for this domain This problem occurs because the server hosting your site also provides email services for your domain. So when you send a message from your site, it doesn't go to the Yandex servers, as per your MX settings, but to the local mail server set up by your hosting provider. To fix this, turn off email services on the hosting provider's side. Then email messages will be sent to our servers. Alternatively, we recommend that you set up outgoing email through our SMTP server - smtp.yandex.ru, using port 465 with SSL encryption and mandatory authentication on the server. So you'll need to indicate, in the settings, the full address of the mailbox that you'll be using to send. I do not want to use smpt server with mail() as i'm not grate with coding in java so any help to turn off e-mail services would be grate thank you in advance M H R V K REDDY