Mail him from a web based email service (Gmail , Hushmail, Yahoo, Hotmail…). Maybe your email domain name gets caught as SPAM.
Check the WhoIS records for Keno.com (nevemind, I did it 
)
| Administrative Contact : | ||||
| Domain, | ||||
| [email protected] | ||||
| ILS Limited | ||||
| PO Box 1127 | ||||
| Landsome Road | ||||
| The Valley, TV1 02P | ||||
| AI | ||||
| Phone: 264 497 5892 | ||||
| Fax: 264 497 3602 | ||||
| Technical Contact : | ||||
| Carley, Scott | ||||
| [email protected] | ||||
| Delta, BC V4M 3S8 | ||||
| CAN | ||||
| Phone: 604-809-5836 | ||||
| Fax: 604-809-5836 | ||||
Maybe one of these numbers will work?