The email that has been send from SES is not recieved by the end user

I have Production access in my Aws SES Service and I have send Test email from a verified identity ( That was my personal Gmail ). when I verified my company email address and send a test mail it shows that the email had been send successfully but not recieved by the end user . I contacted my Company IT team to ensure that there is no blocker or restriction in sending email from company mail id . So what is the actual reason behind this