I'm treating the email addresses my isp has given me as virtual addresses.
I also have $mydestination $virtual_mailbox_domains.
Eg: Presently, when a local machine wants to send mail us...@myisp.com
to us...@myisp.com, the mail is sent to the $relayhost.
This scenario is good when us...@myisp.com is not one of my addresses.
However if us...@myisp.com is also one of my addresses, I want the mail
to be delivered by the same dovecot lda that is used for my
$virtual_mailbox_domains.
This reduces load on both our systems and stops internal mails leaking
unnecessarily.
If an email address is not in $mydestination or
$virtual_mailbox_domains, I'm trying to get postfix to attempt lookup of
the user from a file or sql and if it's found then it use the lda,
otherwise use $relayhost.
Is there a way to accomplish this setup?
Hugh
