Re: Send specific addresses to other relay hosts

Wietse Venema:
> Drew Mazurek:
> > We have an environment with two tiers of mail servers. The outer Postfix
> > servers receive mail for our entire domain and handle delivery for certain
> > addresses. Other specific regexp addresses at the same domain need to be
> > passed to different internal SMTP servers. Anything else must be bounced
> > by the outer servers.
>
> Use the firewall/gateway example in
> http://www.postfix.org/STANDARD_CONFIGURATION_README.html#firewall
> to configure the domain as a relay domain.
>
> Use virtual_alias_maps (NOT VIRTUAL ALIAS DOMAINS) to deliver some
> addresses locally. See
> http://www.postfix.org/STANDARD_CONFIGURATION_README.html#some_local

If you're using different inside hosts, this would also require
transport_maps settings to tell postfix which recipients go where.

There is one simpler approach, but this requires that your inside
servers accept mail for user@hostname.domain.

1 - Leave mydestination empty.

2 - Make example.com a virtual alias domain:

  /etc/postfix/main.cf:
    virtual_alias_domains = example.com
    virtual_alias_maps = hash:/etc/postfix/example.com

3 - List all recipients in virtual_alias_maps:

  /etc/postfix/example.com:
    # User that delivers locally
    user1@example.com user1@localhost

    # User that delivers on internal server
    user2@example.com user2@host.example.com

Instead of hash: file, you would use LDAP or *SQL.

        Wietse

• This message: [ Message body ]
• Next message: Patrick Ben Koetter: "Re: Next day"
• Previous message: Edward Morbius: "Disable delivery for a specific domain (or list of domains)?"
• In reply to: Wietse Venema: "Re: Send specific addresses to other relay hosts"

• Contemporary messages sorted: [ By Date ] [ By Thread ] [ By Subject ] [ By Author ]