Need a solution

[soringo]

Sorry ...here what I wanted to say before:

I have two domains:
- domain1.tld
- domain2.tld

In dns domain1.tld have mail.domain1.tld IN A xxx.xxx.xxx.xxx, domain2.tld have mail.domain2.tld IN A yyy.yyy.yyy.yyy

xxx.xxx.xxx.xxx is my server ip
yyy.yyy.yyy.yyy is client server.

When a user who have email address user@domain1.tld try to send mail to user@domain2.tld get the error message "user user@domain2.tld not in mailbox table".

We know that postfix looks in db files /etc/postfix/ispcp/*...and yes in this files user@domain2.tld doesn't exist because the email server for that domain is on my client machines.

How can I tell postfix to map or transport this emails to my client email server ?

I've try to delete vdm_entry in /etc/postfix/ispcp/domains , no result.

Thx.