how to authenticate when relaying is closed but photocopier cannot authenticate?

[19patje72]

hi all,

We have a customer who has a photocopier Canon IR3300i. The photocopier is able to sent mail. However as we have set Relaying to closed and authorization is required with SMTP, the photocopier cannot sent out emails. Reason being it has no means to authenticate.

Is it possible to allow a single email address to sent out email without having to authenticate itself?

If so, can you let us know how. Our server is RHEL4 using Plesk 8.4.

thanks, Patrick