That's a qmail issue.
Append all domains to the "rcpthosts" (and "morercpthosts") file in the
"control" directory of qmail. Then qmail will accept messages to these
domains, but will handle them as remote and try to send them to the first mx
> -----Ursprüngliche Nachricht-----
> Von: Jasper Metselaar [mailto:[EMAIL PROTECTED]
> Gesendet: Donnerstag, 3. Juli 2003 12:30
> An: [EMAIL PROTECTED]
> Betreff: [vchkpw] Fallback MTA and vpopmail
> I used to have a domain running with vpopmail, qmailadmin and vqadmin.
> Now the owner of the domain asked to deliver his mail to another
> mailserver and to configure my server as a fallback MTA for
> that domain.
> IN MX 10 mail.domain-owner.com.
> IN MX 100 mail.mymailserver.com.
> How should I setup the domain so that my server becomes a fallback and
> that it delivers the e-mail to the primary mailserver when it
> is available
> again (in case the primary mailserver is off-line)?
> Thanks for any suggestions!
> - Jasper