send FAX problem by email
Good morning:
I have installed 0.7.4 in debian squeeze iRedMail. I'm doing some testing and everything seems ok (shipping - reception internal and external).
I have a free iRedMail.
I have a problem and do not know how to fix it.
We have a program of Fax (IMECOM FAX SERVER) downloads the emails from this email account to pop3 fax@domain.es without authentication.
Users send email to the recipient, telephone@fax.domain.es format (example: 98888889@fax.domain.es).
User sends a fax sending an email to telephone@fax.domain.es this mailbox forwards to fax@aelvasa.es

Mail that we currently send email to the account fax@domain.es telephone@fax.domain.es. It has the 2 domains (domain.es and fax.domain.es) and aliases (@ fax.domain.es to fax@domain.es)

Now when I try to send a fax giving me this message.
Protocol: SMTP ... 550 5.1.1. <telephone@fax.domain.es>: Recipient address rejected: User unknown in virtual mailbox table ', 0x800CCC79.

Deputy mailbox file fax@domain.es example.

What steps do I have to do to fix it? I'm lost.

Thank you very much.
Best regards,
Jose.