wrong transport after error ?

[A. Schulze]

Hello,
I have a setup where all messages for a domain is forwarded to a  
remote SMTP server.
Except one address is delivered by lmtp.

transport:
    domain      smtp:remote
    user@domain lmtp:remote

that worked till remote died yesterday.
After remote came up again, message to user@domain where delivered by smtp.

The only unusual on the mta are recipient_bcc_maps copy all messages  
to a second backup place.

postfix-3.0.0

Any hints where I should start searching (my?) misconfiguration?

Thanks.