how to hide the alias-

[keng heng]

hi, I'm using djb fast-forward to do the virtual domain emailling system, but I noticed that in he mail header, I'll get the   Delivered-To: alias-<user_name>@virtual1.com, then finally Delivered-To: <user_name>@real_host_domain.com   is it anyway to hide the Delivered-To: alias-<user_name>@virtual1.com ?   thanks ckh  :)