~control/virtualdomains

You don't need to use this control file to make the virtualdomains work in qmail-ldap.

This is a very condensed view on what's the role of the virtualdomains control file in qmail-ldap:

1. qmail-smtpd accepts connection

Is relayclient set?

Yes -> accept it anyway.

No -> check if recipient domain is listed in rcpthosts or locals else bounce

qmail-smtpd could perform further checks to accept or reject the message. Let's say the message was accepted and got queued.

2. qmail-send takes a look at it

Is the recipients domain in virtualdomains or locals (doesn't matter with qmail-ldap)?

Yes -> feed it to qmail-lspawn for local delivery

No -> feed it to qmail-rspawn for remote delivery (relaying as usual)

3. qmail-lspawn gets it for local delivery

Is the recipients full email address found in the LDAP directory?

Yes -> check if all needed attributes are present

Yes -> deliver it to the maildir

No -> bounce

No -> try a standard qmail (UNIX user or ~users/assign) delivery