J?r?me BECOT via Postfix-users:
> Hello,
>
> I know that this may have been asked a few times, but I need some help:
>
> I manage a server for the domain abc.org. The mx points to my server and
> it is configured to:
>
> - lookup virtual mailboxes and virtual aliases from LDAP
> - send mails to dovecot
>
> It works, but I'd like to handle recipients that does not exist in LDAP
> (nor in Dovecot) and forward them to an older server, that used to own
> the domain:
>
> j...@abc.com > exists in LDAP > delivered to Dovecot
> jdaniel > does not exists in LDAP > forwarded to oldmx.abc.com
>
> I have unsuccessfully tried to:
>
> - add a hashed tranport map in virtual_transport_maps
> - add it in transport_maps
That would fail with "User Unkonwn" errors.
You need a virtual alias:
/etc/postfix/main.cf:
virtual_alias_maps = hash:/etc/postfix/virtual_alias
/etc/postfix/virtual_alias
jdan...@abc.com usern...@oldmx.abc.com
(or LDAP equivalent).
DO NOT add oldmx.abc.com to main.cf:virtual_alias_domains.
In the case that oldmx.abc.com rejects mail for
usern...@oldmx.abc.com, you also need:
/etc/postfix/main.cf:
smtp_generic_maps = hash:/etc/postfix/smtp_generic
/etc/postfix/smtp_generic:
usern...@oldmx.abc.com usern...@abc.com
(or LDAP equivalent).
Wietse
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