Ask them to check for any incoming e-mail scanner running on their local
machine. If so, ask them disable the same. Also check the .qmail file in the
user's folder for any duplicate entries.
Regards,
Prasad Asokan
2009/9/11 Bulend Kolay
> I use vpopmail on qmail.
>
> I have many customer domain
I use vpopmail on qmail.
I have many customer domains on that mail server.
One of these customer domains tells me that, they rarely receive the same
mail a few times. That problem becomes nearly once a week for this
customer.
I haven't any complain from my other customers.
They use outlook or