Re: Question about Postfix configuration

[mouss]

Goet, Kees wrote:
> In a Postfix-configuration which was setup some time ago by a previous
> colleague of mine, I ran into the following
>
> construction:
>
>  
>
> smtpd_sender_restrictions =
>
>  ....
>
>  check_recipient_access regexp:/etc/postfix/access.recipient.regexp
>
>  ....
>
>  permit
>
>  
>
> smtpd_recipient_restrictions = 
>
>  ....
>
>  check_sender_access regexp:/etc/postfix/access.sender.regexp
>
>  ....
>
>  permit
>
>  
>
> I would assume that check_recipient_access would be used in the
> smtpd_recipient restrictions and
>
> check_sender_access in the smtpd_sender_restrictions.
>
>   

all checks can be used at any stage provided the information is 
available. In the default setup, client, helo, sender and recipient 
restrictions are all run at RCPT stage.

A common approach is to put (almost) all checks under 
smtpd_recipient_restrictions, as this avoids repeating "whitelists" and 
may be easier to "follow" (sequential list).
>  
>
> Could there be a particular reason why it is done this way?
>   

we can't tell unless we know the full details.