How to disable webmail for only ONE site on a server?

stupid

Registered
Apr 3, 2002
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I have a customer who has implemented his own webmail program for his employees to use (currently 50+).

The problem is that some of them are using the domain.com/webmail and are too stupid to realize this is NOT the right webmail program, but is the &built-in& NeoMail.

My customer wants me to set things up so that when his employee's go to domain.com/webmail they get a 404 error. I feel like a moron because I can't even shut down NeoMail.

Can I do this? It is only for ONE domain on the whole server.

Thanks.