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I have server POSTFIX + DOVECOT with LDAP (ActiveDirectory) authorization.

/etc/postfix/ldap_virtual_mailbox_maps.cf

query_filter = (&(objectClass=person)(mail=%s))
result_filter = %s
result_attribute = mail

/etc/postfix/ldap_virtual_alias_maps.cf

query_filter = (&(objectClass=person)(othermailbox=%s))
result_attribute = othermailbox

/etc/dovecot/dovecot-ldap.conf.ext

pass_filter = (&(objectCategory=Person)(sAMAccountName=%n))
user_filter = (&(objectCategory=Person)(sAMAccountName=%n))

The email specified in the attribute "mail" works (users can send and receive messages). I specify an alias in the attribute "othermailbox" (for example - s15@domain.com).

    # postmap -q s15@domain.com ldap:/etc/postfix/ldap_virtual_alias_maps.cf
    s15@domain.com

When I send an email to this address (s15@domain.com) then get "Undelivered Mail Returned to Sender"

The mail system s15@domain.com: user unknown

What am I doing wrong ? I will be grateful for comments.

anx
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Vitaly579
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1 Answers1

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I suspect the result_attribute in your ldap_virtual_alias_maps.cf is not what you meant to configure. A virtual_alias_maps result that just the returns the lookup key by itself is not very useful (that feature is meant to alias one address to other addresses).

Usually, it would look up by the additional address (your field othermailbox), but it would still return the primary address (your field mail). You may want something like this.

# lookup by othermailbox
query_filter = (&(objectClass=person)(othermailbox=%s))
# but return primary address
result_attribute = mail

If you tell Postfix that s15@example.com is an alias for s15@example.com.. that does not tell Postfix where the mail should go. Because the (unchanged) destination s15@example.com is still not a known user.

anx
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