From: Alexey Lobanov (A.Lobanovcro-rct.ru)
Date: Thu Feb 21 2008 - 08:38:21 CST

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Hello all.

One of my Postfix installations works as a firewall relay for
MS-Exchange, forwards all mail for any existing users to this Exchange
and denies mail for non-existent users with cached
"reject_unverified_recipient". Everything works fine without any
"virtual_alias_maps" or "relay_recipient_maps" exported from Exchange.

Now I need to catch mail for few recipients who do not exist anymore in
Exchange and forward this mail to other individual destinations. All the
rest should work same as before.

AFAIR, this feature had been called "fqdnaliases" in Zmailer. It is
possible in Zmailer to intercept and redirect messages for *any*
specified fully-qualified domain address, no matter if this domain is a
local destination or not.

Is it possible to do same in Postfix?

If not, I know an other solution: I have to configure virtual_alias_maps
for the destination domain combined from LDAP lookups to the Microsoft
AD and a local file. Possibly, this solution is the best one?

Alexey

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