On Tuesday, November 10, 2009 at 07:49 CET,
     "Arora, Sumit" <sumit.ar...@hp.com> wrote:

> I'm using mysql local_recipient_maps for rejecting email for unknown
> local users.
> 
> Here are the changes in my main.cf
> 
> local_recipient_maps = proxy:unix:passwd.byname $alias_maps 
> virtual_alias_maps = mysql:/etc/postfix/mysql-relays.cf

I assume this should be:

local_recipient_maps = proxy:unix:passwd.byname $alias_maps
virtual_alias_maps = mysql:/etc/postfix/mysql-relays.cf

> Here is my mysql-relays.cf
> 
> hosts=16.123.123.123
> user=root
> password=*****
> dbname=testDB
> table=users
> query = select emailaddress from users where emailaddress='%s'
> 
> I'm able to query successfully.
> 
> But I'm stuck as my requirement is to query database according to sender.
> 
> Let's say some user with emailaddress 'sen...@myhostname.com' is
> sending email to my postfix and I need to validate him.

What does "validate the sender" mean? Check that the sender address, if
it's one of your own domains, is a valid recipient address? Only allow a
select number of sender addresses? Please be more complete.

You do know that sender addresses are easily spoofed?

[...]

-- 
Magnus Bäck
mag...@dsek.lth.se

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