On 8/23/2015 12:33 PM, Robert Schetterer wrote:
> Am 23.08.2015 um 18:15 schrieb Jeremy T. Bouse:
>> I've had my Postfix mail server running for several years now using
>> Postfixadmin to manage the database tables holding my virtual mailbox
>> information for domains I'm hosting mail from. It's become time to move
>> this mail server so I'm having to rebuild it and I'm wanting to put the
>> mailboxes behind a firewall but have an SMTP relay host that will accept
>> the mail and forward it in. Obviously I don't want to just blindly
>> accept all email for the domains and relay it into the internal host
>> which would then have to deal with sending back scatter for invalid
>> addresses.
>>
>> My current configuration handled the configuration using
>> virtual_mailbox_maps, virtual_alias_maps and virtual_mailbox_domains
>> settings that were pointed to the configuration files that generated the
>> appropriate queries for the database. Obviously I'll be reusing this for
>> my internal postfix server behind the firewall which will be receiving
>> the emails but I'm trying to determine how to modify for my relay to be
>> able to validate the email before relaying it into the internal host.
>>
> depends on your network/firewall setup you may simply use sql as before
> , another option use smtp verify, or create
> static tables at/from sql change time with secure copy etc
Both Postfix servers are able to reach the database that holds the
mail account data. Is there a simple elegant solution that can reuse the
database content but under a different mapping to allow it to be
accepted and forwarded along to the internal mail server? Last time I
did something like this it was with Sendmail using LDAP for smart host
routing of mailboxes.
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