Spam mail issue

We are using MessageLabs and Symantec to filter our spam mail, unfortunately some spam mail still able to come in.

For example, From abc@suntec.com to abc@suntec.com.

Please advise.

Thank You.

Best Regards,

Kok Chong Ban

Subject: Your own domain is on your white list?

http://www-10.lotus.com/ldd/nd6forum.nsf/55c38d716d632d9b8525689b005ba1c0/cafb8e9aba41b742852572880047e436?OpenDocument

Subject: I should exclude my domain from the white list ? Please advise. Thanks.

Subject: You can do better:

Put your domainname in your black list.