E-mails not reaching mail@ourdomain.com

Hi all,

Its a weird thing that my Contact form 7 does not send mails to our own domain sales@euroceil.com. Same time Mails are getting stored in Contact Form DB. It gets more interesting when the To:mail is given as someone@gmail.com, it is working fine. We have tried with all solutions but in vain. Is this some SMTP error or something. All is well with our server and external transactions are going fine.

Can any of the Contact Form 7 Gurus or WordPress Superheroes throw some light on this issue?

Our Site : http://www.euroceil.com/contact-us/

Guys, Thanks in advance for the People who are going to provide solution for this!

https://wordpress.org/plugins/contact-form-7/