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We have a requirement where we need to reject senders if they are not
present in our ldap virtual domains.
postfix 2.5 with openLDAP (with various virtual domains)
Problem Description =>
Unknown senders (mail ids that are not present in LDAP) are able to send
mails to recipients in these domains. (Relaying is blocked of course for
A user (not present in LDAP) should be blocked from sending mails.
We cannot apply check_sender_access based on LDAP as that would lead genuine
mails from external domains also being rejected
CAn you suggest a parameter which can accomplish this, or we need to write
our own policy for this ?