Andrzej Adam Filip wrote:
>> [...]
>
> Use the debug command below:
> echo '3,0 peter@imap.local' | sendmail -d21.12 -d8.20 -d60.5 -bt
>
> -d21.12 - tracking R lines processing in sendmail.cf
> -d8.20 - tracking DNS queries
> -d60.5 - tracking map lookups
>

thnx a lot !! this lead me to my problem.

imap.local was a CNAME to phoenix.local and so sendmail "translated"
imap.local to its canonical hostname phoenix.local, which is in class{w}
and therefore mailertable does not apply anymore.

changing imap.local to a A-record in my zonefile solved the problem.

thnx a lot
peter