If he is not the admin for both mail servers, he could not fake

Any email has one unique id and the email servers have logs for all recent messages. He can not control both servers without hacking into both of them (his and yours). In the email server logs, there is a timestamp for sending or receiving so it is traceable. Too much work for him if he really want to be clean.

所有跟帖： 

• 我也好奇：按說一份郵件送達前，往往會經過很過個中轉，每個中轉都會加蓋時間戳，同時在服務器上保留中轉記錄。但是 -eN_Joy- ♀ (111 bytes) () 08/07/2015 postreply 08:26:43